diff --git a/api/.gradle/caches/paperweight/taskCache/reobfJar.log b/api/.gradle/caches/paperweight/taskCache/reobfJar.log
index db7dd04..40902d9 100644
--- a/api/.gradle/caches/paperweight/taskCache/reobfJar.log
+++ b/api/.gradle/caches/paperweight/taskCache/reobfJar.log
@@ -1,2 +1,17 @@
 Command: C:\Program Files\Java\jdk-17\bin\java.exe -Xmx1G -classpath C:\Users\Mangr\.gradle\caches\modules-2\files-2.1\net.fabricmc\tiny-remapper\0.10.1\c293b2384ae12af74f407fa3aaa553bba4ac6763\tiny-remapper-0.10.1-fat.jar net.fabricmc.tinyremapper.Main D:\PC\Projects\KtBukkitGui\api\build\libs\ktgui-2.4.1-dev-all.jar D:\PC\Projects\KtBukkitGui\api\build\libs\api-2.4.1.jar C:\Users\Mangr\.gradle\caches\paperweight-userdev\ff775525efc29c3503a07d1006e63e5695a742b7505cf63e157d49d32419c69f\module\io.papermc.paper\dev-bundle\1.20.4-R0.1-SNAPSHOT\paperweight\setupCache\extractDevBundle.dir\data\mojang+yarn-spigot-reobf.tiny mojang+yarn spigot C:\Users\Mangr\.gradle\caches\paperweight-userdev\ff775525efc29c3503a07d1006e63e5695a742b7505cf63e157d49d32419c69f\module\io.papermc.paper\dev-bundle\1.20.4-R0.1-SNAPSHOT\paperweight\setupCache\applyMojangMappedPaperclipPatch.jar --threads=1
-Finished after 2784.17 ms.
+Exception in thread "main" java.lang.RuntimeException: java.nio.file.FileSystemException: D:\PC\Projects\KtBukkitGui\api\build\libs\api-2.4.1.jar: The process cannot access the file because it is being used by another process
+	at net.fabricmc.tinyremapper.Main.main(Main.java:267)
+Caused by: java.nio.file.FileSystemException: D:\PC\Projects\KtBukkitGui\api\build\libs\api-2.4.1.jar: The process cannot access the file because it is being used by another process
+	at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:92)
+	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
+	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
+	at java.base/sun.nio.fs.WindowsFileSystemProvider.implDelete(WindowsFileSystemProvider.java:275)
+	at java.base/sun.nio.fs.AbstractFileSystemProvider.delete(AbstractFileSystemProvider.java:105)
+	at java.base/java.nio.file.Files.delete(Files.java:1152)
+	at jdk.zipfs/jdk.nio.zipfs.ZipFileSystem.sync(ZipFileSystem.java:1914)
+	at jdk.zipfs/jdk.nio.zipfs.ZipFileSystem.lambda$close$10(ZipFileSystem.java:494)
+	at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
+	at jdk.zipfs/jdk.nio.zipfs.ZipFileSystem.close(ZipFileSystem.java:493)
+	at net.fabricmc.tinyremapper.FileSystemReference.close(FileSystemReference.java:131)
+	at net.fabricmc.tinyremapper.OutputConsumerPath.close(OutputConsumerPath.java:213)
+	at net.fabricmc.tinyremapper.Main.main(Main.java:266)
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/DeclarativeCommandBuilder.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/DeclarativeCommandBuilder.kt
index 15554dd..26e7aa5 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/DeclarativeCommandBuilder.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/DeclarativeCommandBuilder.kt
@@ -22,6 +22,7 @@ import org.bukkit.permissions.PermissionDefault
 import java.time.Duration
 import java.util.*
 import java.util.function.Consumer
+import kotlin.math.exp
 
 open class DeclarativeCommandBuilder(
     val name: String
@@ -192,10 +193,10 @@ open class DeclarativeCommandBuilder(
     }
 
     operator fun FlagArgument.unaryPlus() = withFlag(this)
-    operator fun <T : Any> OptionArgument<T>.unaryPlus() = withOption(this)
+    operator fun <T : Any> OptionArgument<T>.unaryPlus() = this.apply { withOption(this) }
     operator fun <T : Any> Argument<T>.unaryPlus() = OptionArgument(this).unaryPlus()
 
-    fun getCurrentCommand(context: SuggestionInvocation<*>): Pair<SuggestionInvocation<*>, DeclarativeCommandBuilder?> {
+    fun getCurrentCommand(context: StorageCommandContext<*>): Pair<StorageCommandContext<*>, DeclarativeCommandBuilder?> {
         val firstArg = context.rawArgs.firstOrNull()
             ?: return context to this
 
@@ -208,7 +209,7 @@ open class DeclarativeCommandBuilder(
         return context to this
     }
 
-    fun getSuggestions(context: SuggestionInvocation<*>): List<String> {
+    fun getSuggestions(context: StorageCommandContext<*>): List<String> {
         val cmds = subcommands
             .filter { it.nameStarts(context.last) }
             .map { listOf(it.name) + it.aliases }
@@ -218,7 +219,7 @@ open class DeclarativeCommandBuilder(
         val suggestedArgs = arrayListOf(*cmdsList.toTypedArray())
 
         for (arg in expectedArguments) {
-            val processor = ArgumentProcessor(this, list)
+            val processor = ArgumentProcessor(this, context, list)
             val result = arg.consume(processor)
 
             if (result.isEmpty() && !arg.isRequired()) continue
@@ -302,14 +303,9 @@ open class DeclarativeCommandBuilder(
         }
 
         // Move onto args
-
         val argumentValues = hashMapOf<String, ArgumentContext<*>>()
 
-//        var expectedArgumentIndex = 0
-//        var providedArgumentIndex = 0
-
-        val argumentProcessor = ArgumentProcessor(this, context.rawArgs)
-        println(context.rawArgs)
+        val argumentProcessor = ArgumentProcessor(this, context, context.rawArgs)
         for ((index, arg) in expectedArguments.withIndex()) {
             if (argumentProcessor.done()) {
                 if (arg.isRequired()) {
@@ -357,6 +353,11 @@ open class DeclarativeCommandBuilder(
             }
         }
 
+        // If there are no args they might be using optionals or flags
+        if (expectedArguments.isEmpty()) {
+            argumentProcessor.next()
+        }
+
         if (!argumentProcessor.done()) {
             // Too many args, unknown command maybe?
             if (unknownCommand.isPresent) {
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/DeclarativeCommandWrapper.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/DeclarativeCommandWrapper.kt
index b7c59af..f550231 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/DeclarativeCommandWrapper.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/DeclarativeCommandWrapper.kt
@@ -19,7 +19,7 @@ class DeclarativeCommandWrapper(
     }
 
     override fun tabComplete(sender: CommandSender, alias: String, args: Array<out String>): MutableList<String> {
-        val context = SuggestionInvocation(Optional.of(sender), alias, args.toList().subList(0, args.size - 1))
+        val context = StorageCommandContext(sender, alias, args.toList().subList(0, args.size - 1))
 
         val (newContext, finalCommand) = builder.getCurrentCommand(context)
         val outArgs = finalCommand?.getSuggestions(newContext)
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/Argument.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/Argument.kt
index 7595c1b..7200c48 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/Argument.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/Argument.kt
@@ -27,7 +27,7 @@ open class Argument<T : Any>(
     var invalidCallback = EventCallback<InvalidArgContext<*>>()
         protected set
     private var optional = false
-    // todo impl default value
+    private var default: T? = null
 
     init {
         withTypeSuggestions()
@@ -63,6 +63,12 @@ open class Argument<T : Any>(
         this.optional = value
     }
 
+    infix fun defaultValue(default: T) = apply {
+        this.default = default
+    }
+
+    fun getDefaultValue() = default
+
     infix fun missing(block: InvalidArgContext<*>.() -> Unit) = apply {
         this.missingCallback.callbacks.add(block)
     }
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentConsumer.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentConsumer.kt
index 200e256..6457a18 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentConsumer.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentConsumer.kt
@@ -81,7 +81,9 @@ fun interface ArgumentConsumer {
         infix fun untilPartial(predicate: (ArgumentProcessor, String) -> Boolean) = untilFalsePartial { p, s -> !predicate(p, s) }
 
         @JvmStatic
-        fun remaining() = untilFalse { processor, _ -> !processor.done() }
+        fun remaining() = untilFalse { processor, _ ->
+            !processor.done()
+        }
 
         @JvmStatic
         infix fun variable(amount: Int): ArgumentConsumer {
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentContext.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentContext.kt
index 7aa468c..4995855 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentContext.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentContext.kt
@@ -1,5 +1,6 @@
 package com.mattmx.ktgui.commands.declarative.arg
 
+import org.codehaus.plexus.util.cli.Arg
 import java.util.*
 
 class ArgumentContext<T : Any>(
@@ -22,4 +23,9 @@ class ArgumentContext<T : Any>(
     fun asOptional() = value
 
     override fun toString() = getOrNull().toString()
+
+    companion object {
+        fun <T : Any> empty(argument: Argument<T>) =
+            ArgumentContext(null, Optional.ofNullable(argument.getDefaultValue()), argument)
+    }
 }
\ No newline at end of file
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentProcessor.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentProcessor.kt
index e40c71d..075b0eb 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentProcessor.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/ArgumentProcessor.kt
@@ -2,9 +2,11 @@ package com.mattmx.ktgui.commands.declarative.arg
 
 import com.mattmx.ktgui.commands.declarative.DeclarativeCommandBuilder
 import com.mattmx.ktgui.commands.declarative.arg.impl.*
+import com.mattmx.ktgui.commands.declarative.invocation.StorageCommandContext
 
 class ArgumentProcessor(
     val command: DeclarativeCommandBuilder,
+    val context: StorageCommandContext<*>,
     val args: List<String>
 ) {
     var pointer = -1
@@ -18,18 +20,33 @@ class ArgumentProcessor(
         while (current().let { it != null && command.optionsSyntax.match(it) }) {
             val optionOrPointerId = command.optionsSyntax.removePrefixFrom(current()!!)
 
-            if (command.permittedFlags.any { it.chatName() == optionOrPointerId }) {
-                optionsAndFlagsValues[optionOrPointerId] = true
+            val flag = command.permittedFlags.firstOrNull { it.chatName() == optionOrPointerId }
+
+            if (flag != null) {
+                val passed = if (flag.requiresCheck.isEmpty) true else flag.requiresCheck.isPresent
+
+                if (passed) {
+                    optionsAndFlagsValues[optionOrPointerId] = true
+                }
+
                 pointer++
-            } else if (command.permittedOptions.any { it.chatName() == optionOrPointerId }) {
+            } else {
+                println(command.permittedOptions)
+                val option = command.permittedOptions.firstOrNull {
+                    it.chatName() == optionOrPointerId
+                }
+
+                if (option != null) {
+                    val passed = if (option.requiresCheck.isEmpty) true else option.requiresCheck.get()(context)
 
-                // TODO this should read the argument type args (does that make sense?)
-                // e.g '--test "hello world"' -> hello world
+                    if (passed) {
+                        val value = peek(1) ?: continue
+                        optionsAndFlagsValues[optionOrPointerId] = value
+                    }
 
-                val value = peek(1) ?: continue
-                optionsAndFlagsValues[optionOrPointerId] = value
-                pointer += 2
-            } else break
+                    pointer += 2
+                } else break
+            }
         }
 
         return current()
@@ -40,7 +57,7 @@ class ArgumentProcessor(
         this.optionsAndFlagsValues.clear()
     }
 
-    fun clone() = ArgumentProcessor(command, args).apply {
+    fun clone() = ArgumentProcessor(command, context, args).apply {
         this.optionsAndFlagsValues = this@ArgumentProcessor.optionsAndFlagsValues
         this.pointer = this@ArgumentProcessor.pointer
     }
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/FlagArgument.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/FlagArgument.kt
index a564cf9..9fbe95a 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/FlagArgument.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/FlagArgument.kt
@@ -3,10 +3,24 @@ package com.mattmx.ktgui.commands.declarative.arg.impl
 import com.mattmx.ktgui.commands.declarative.DeclarativeCommandBuilder
 import com.mattmx.ktgui.commands.declarative.arg.Argument
 import com.mattmx.ktgui.commands.declarative.invocation.BaseCommandContext
+import com.mattmx.ktgui.commands.declarative.invocation.RunnableCommandContext
+import com.mattmx.ktgui.commands.declarative.invocation.StorageCommandContext
+import java.util.*
 
 class FlagArgument(
     name: String
 ) : Argument<Boolean>(name, "boolean") {
+    // todo command auto builder permissions node
+    var requiresCheck = Optional.empty<(StorageCommandContext<*>) -> Boolean>()
+    var showsInSuggestions = true
+
+    infix fun requires(context: StorageCommandContext<*>.() -> Boolean) = apply {
+        this.requiresCheck = Optional.of(context)
+    }
+
+    infix fun requiresPermission(node: String) = requires {
+        sender.hasPermission(node)
+    }
 
     fun chatName() = name().replace("_", "-")
 
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/MultiChoiceArgument.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/MultiChoiceArgument.kt
index dfc050a..e269388 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/MultiChoiceArgument.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/MultiChoiceArgument.kt
@@ -8,23 +8,22 @@ import com.mattmx.ktgui.commands.declarative.invocation.BaseCommandContext
 
 class MultiChoiceArgument<T : Any>(
     name: String,
-    initialChoices: HashMap<String, T>
+    initialChoices: () -> HashMap<String, T>
 ) : Argument<T>(name, "multi-choice") {
-    private val choices = initialChoices
+    private val choices: () -> HashMap<String, T> = initialChoices
 
     init {
         this.consumes(
             ArgumentConsumer.until { argumentProcessor, s ->
-                println("processing op '$s'")
-                choices.containsKey(s)
+                choices().containsKey(s)
             }
         )
-        suggests { choices.keys.toList() }
+        suggests { choices().keys.toList() }
     }
 
     override fun getValueOfString(
         cmd: DeclarativeCommandBuilder,
         context: BaseCommandContext<*>,
         stringValue: String?
-    ) = choices[stringValue]
+    ) = choices()[stringValue]
 }
\ No newline at end of file
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/OptionArgument.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/OptionArgument.kt
index af48bb6..f05b279 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/OptionArgument.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/OptionArgument.kt
@@ -1,9 +1,30 @@
 package com.mattmx.ktgui.commands.declarative.arg.impl
 
 import com.mattmx.ktgui.commands.declarative.arg.Argument
+import com.mattmx.ktgui.commands.declarative.invocation.RunnableCommandContext
+import com.mattmx.ktgui.commands.declarative.invocation.StorageCommandContext
+import java.util.Optional
 
 class OptionArgument<T : Any>(
     val sub: Argument<T>
 ) {
+    // todo command auto builder permissions node
+    var requiresCheck = Optional.empty<(StorageCommandContext<*>) -> Boolean>()
+        private set
+    var shownInSuggestions = true
+        private set
+
+    infix fun requires(context: StorageCommandContext<*>.() -> Boolean) = apply {
+        this.requiresCheck = Optional.of(context)
+    }
+
+    infix fun requiresPermission(node: String) = requires {
+        sender.hasPermission(node)
+    }
+
+    infix fun shownInSuggestions(value: Boolean) = apply {
+        this.shownInSuggestions = value
+    }
+
     fun chatName() = sub.name().replace("_", "-")
 }
\ No newline at end of file
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/StringArgument.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/StringArgument.kt
index 7c3ce14..4e13c4c 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/StringArgument.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/StringArgument.kt
@@ -24,7 +24,7 @@ class StringArgument(
         val range = (min..max)
 
         val matchesRange = stringValue.length in range
-        val matchesAllowed = allowed.any { it.matches(stringValue) }
+        val matchesAllowed = allowed.all { it.matches(stringValue) }
         val meetsDisallowed = disallow.none { it.matches(stringValue) }
 
         val all = matchesRange && matchesAllowed && meetsDisallowed
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/args.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/args.kt
index 08fabf8..8e262a6 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/args.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/arg/impl/args.kt
@@ -1,7 +1,6 @@
 package com.mattmx.ktgui.commands.declarative.arg.impl
 
 import com.mattmx.ktgui.commands.declarative.arg.Argument
-import com.mattmx.ktgui.commands.declarative.arg.ArgumentConsumer
 import kotlin.properties.ReadOnlyProperty
 import kotlin.reflect.KProperty
 
@@ -48,7 +47,10 @@ inline fun <reified E : Enum<E>> enumArgument(type: String = E::class.java.simpl
 fun flag() = delegateArgument(FlagArgument(DELEGATED_ARG_NAME))
 
 fun <T : Any> multiChoiceArgument(vararg choices: Pair<String, T>) =
-    delegateArgument(MultiChoiceArgument(DELEGATED_ARG_NAME, hashMapOf(*choices)))
+    delegateArgument(MultiChoiceArgument(DELEGATED_ARG_NAME) { hashMapOf(*choices) })
+
+fun <T : Any> multiChoiceArgument(choiceSupplier: () -> HashMap<String, T>) =
+    delegateArgument(MultiChoiceArgument(DELEGATED_ARG_NAME) { choiceSupplier() })
 
 fun <T : Any> simpleMappedArgument() =
     delegateArgument(SimpleArgument<T>(DELEGATED_ARG_NAME, "type"))
\ No newline at end of file
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/invocation/RunnableCommandContext.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/invocation/RunnableCommandContext.kt
index 8336fcb..252ef68 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/invocation/RunnableCommandContext.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/invocation/RunnableCommandContext.kt
@@ -24,7 +24,7 @@ class RunnableCommandContext<T : CommandSender>(
 
     val <S : Any> Argument<S>.context: ArgumentContext<S>
         get() = getArgumentContext(name())
-            ?: error("The argument ${name()} is not available in this command context.")
+            ?: ArgumentContext.empty(this)
 
     operator fun <S : Any> Argument<S>.invoke(): S {
         val ctx = context
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/invocation/StorageCommandContext.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/invocation/StorageCommandContext.kt
index badfa30..b4b8b2f 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/invocation/StorageCommandContext.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/declarative/invocation/StorageCommandContext.kt
@@ -8,6 +8,8 @@ open class StorageCommandContext<T : CommandSender>(
     rawArgs: List<String>
 ) : BaseCommandContext<T>(sender, alias, rawArgs) {
     val storage = hashMapOf<String, Any?>()
+    val last: String
+        get() = rawArgs.lastOrNull() ?: ""
 
     override fun clone(newList: List<String>): StorageCommandContext<T> {
         return StorageCommandContext(sender, alias, newList)
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/CommandSuggestion.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/CommandSuggestion.kt
index 1d2c01d..834ef18 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/CommandSuggestion.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/CommandSuggestion.kt
@@ -1,11 +1,11 @@
 package com.mattmx.ktgui.commands.suggestions
 
-import com.mattmx.ktgui.commands.declarative.invocation.SuggestionInvocation
+import com.mattmx.ktgui.commands.declarative.invocation.StorageCommandContext
 
 fun interface CommandSuggestion<V> {
-    fun getSuggestion(invocation: SuggestionInvocation<*>): Collection<String>?
+    fun getSuggestion(invocation: StorageCommandContext<*>): Collection<String>?
 
-    fun getLastArgSuggestion(invocation: SuggestionInvocation<*>) = getSuggestion(invocation)
+    fun getLastArgSuggestion(invocation: StorageCommandContext<*>) = getSuggestion(invocation)
         ?.filter { it.startsWith((invocation.rawArgs.lastOrNull() ?: ""), true) }
 
     fun getValue(argumentString: String?) : V? {
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/SimpleCommandSuggestion.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/SimpleCommandSuggestion.kt
index cf06412..c8810bd 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/SimpleCommandSuggestion.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/SimpleCommandSuggestion.kt
@@ -1,5 +1,6 @@
 package com.mattmx.ktgui.commands.suggestions
 
+import com.mattmx.ktgui.commands.declarative.invocation.StorageCommandContext
 import com.mattmx.ktgui.commands.declarative.invocation.SuggestionInvocation
 import kotlin.reflect.KProperty
 import kotlin.reflect.jvm.javaMethod
@@ -9,7 +10,7 @@ open class SimpleCommandSuggestion<V, F>(
     val list: () -> List<V>
 ) : CommandSuggestion<V> {
 
-    override fun getSuggestion(invocation: SuggestionInvocation<*>): List<String>? {
+    override fun getSuggestion(invocation: StorageCommandContext<*>): List<String>? {
         val list = list()
 
         return list.map { obj -> field.getter.javaMethod?.invoke(obj).toString() }
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/impl/MaterialCommandSuggestion.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/impl/MaterialCommandSuggestion.kt
index 272ebaf..bfbb2a2 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/impl/MaterialCommandSuggestion.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/impl/MaterialCommandSuggestion.kt
@@ -1,11 +1,12 @@
 package com.mattmx.ktgui.commands.suggestions.impl
 
+import com.mattmx.ktgui.commands.declarative.invocation.StorageCommandContext
 import com.mattmx.ktgui.commands.declarative.invocation.SuggestionInvocation
 import com.mattmx.ktgui.commands.suggestions.CommandSuggestion
 import org.bukkit.Material
 
 class MaterialCommandSuggestion : CommandSuggestion<Material> {
-    override fun getSuggestion(invocation: SuggestionInvocation<*>): List<String> {
+    override fun getSuggestion(invocation: StorageCommandContext<*>): List<String> {
         return Material.values().map { it.key.toString() }
     }
 
diff --git a/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/impl/OnlinePlayersCommandSuggestion.kt b/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/impl/OnlinePlayersCommandSuggestion.kt
index c2c29a0..2c1cb16 100644
--- a/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/impl/OnlinePlayersCommandSuggestion.kt
+++ b/api/src/main/kotlin/com/mattmx/ktgui/commands/suggestions/impl/OnlinePlayersCommandSuggestion.kt
@@ -1,14 +1,15 @@
 package com.mattmx.ktgui.commands.suggestions.impl
 
+import com.mattmx.ktgui.commands.declarative.invocation.StorageCommandContext
 import com.mattmx.ktgui.commands.suggestions.CommandSuggestion
 import com.mattmx.ktgui.commands.declarative.invocation.SuggestionInvocation
 import org.bukkit.Bukkit
 import org.bukkit.entity.Player
 
 class OnlinePlayersCommandSuggestion : CommandSuggestion<Player> {
-    override fun getSuggestion(invocation: SuggestionInvocation<*>): List<String> {
+    override fun getSuggestion(invocation: StorageCommandContext<*>): List<String> {
         return Bukkit.getOnlinePlayers()
-            .filter { if (invocation.sender.orElse(null) is Player) (invocation.sender.get() as Player).canSee(it) else true }
+            .filter { if (invocation.sender is Player) invocation.sender.canSee(it) else true }
             .map { it.name }
             .toList()
     }
diff --git a/plugin/.gradle/caches/paperweight/taskCache/reobfJar.log b/plugin/.gradle/caches/paperweight/taskCache/reobfJar.log
index c20b37a..bde4027 100644
--- a/plugin/.gradle/caches/paperweight/taskCache/reobfJar.log
+++ b/plugin/.gradle/caches/paperweight/taskCache/reobfJar.log
@@ -1,2 +1,2 @@
 Command: C:\Program Files\Java\jdk-17\bin\java.exe -Xmx1G -classpath C:\Users\Mangr\.gradle\caches\modules-2\files-2.1\net.fabricmc\tiny-remapper\0.10.1\c293b2384ae12af74f407fa3aaa553bba4ac6763\tiny-remapper-0.10.1-fat.jar net.fabricmc.tinyremapper.Main D:\PC\Projects\KtBukkitGui\plugin\build\libs\ktgui-plugin-2.4.1-dev-all.jar D:\PC\Projects\KtBukkitGui\plugin\build\libs\plugin-unspecified.jar C:\Users\Mangr\.gradle\caches\paperweight-userdev\ff775525efc29c3503a07d1006e63e5695a742b7505cf63e157d49d32419c69f\module\io.papermc.paper\dev-bundle\1.20.4-R0.1-SNAPSHOT\paperweight\setupCache\extractDevBundle.dir\data\mojang+yarn-spigot-reobf.tiny mojang+yarn spigot C:\Users\Mangr\.gradle\caches\paperweight-userdev\ff775525efc29c3503a07d1006e63e5695a742b7505cf63e157d49d32419c69f\module\io.papermc.paper\dev-bundle\1.20.4-R0.1-SNAPSHOT\paperweight\setupCache\applyMojangMappedPaperclipPatch.jar --threads=1
-Finished after 1634.00 ms.
+Finished after 2866.75 ms.
diff --git a/plugin/src/main/kotlin/com/mattmx/ktgui/KotlinGui.kt b/plugin/src/main/kotlin/com/mattmx/ktgui/KotlinGui.kt
index d2ec71a..d8e131d 100644
--- a/plugin/src/main/kotlin/com/mattmx/ktgui/KotlinGui.kt
+++ b/plugin/src/main/kotlin/com/mattmx/ktgui/KotlinGui.kt
@@ -1,6 +1,7 @@
 package com.mattmx.ktgui
 
 import com.mattmx.ktgui.commands.declarative.arg.impl.*
+import com.mattmx.ktgui.commands.declarative.arg.suggests
 import com.mattmx.ktgui.commands.declarative.arg.suggestsTopLevel
 import com.mattmx.ktgui.commands.declarative.arg.withArgs
 import com.mattmx.ktgui.commands.declarative.div
@@ -26,6 +27,7 @@ import org.bukkit.event.inventory.InventoryType
 import org.bukkit.plugin.java.JavaPlugin
 import java.time.Duration
 import java.util.logging.Logger
+import kotlin.math.max
 
 class KotlinGui : JavaPlugin() {
     override fun onEnable() {
@@ -313,6 +315,8 @@ class KotlinGui : JavaPlugin() {
                     +username
 
                     runs<Player> {
+                        reply(username.context.stringValue() ?: "null")
+
                         val results = history
                             .subList(0, maxResults.context.orElse(history.size).coerceAtMost(history.size))
                             .filter { it.first == username.context.orElse(it.first) }
@@ -326,7 +330,7 @@ class KotlinGui : JavaPlugin() {
 
                 val cooldownPeriod by longArgument()
                 cooldownPeriod optional true
-                // fixme: args optional don't work
+                cooldownPeriod suggests { listOf(cooldownPeriod.toString()) }
                 ("cooldown" / cooldownPeriod) {
 
                     cooldown(Duration.ofSeconds(3))
@@ -348,24 +352,23 @@ class KotlinGui : JavaPlugin() {
                 "obj" {
                     val objects = hashMapOf<String, HashMap<String, String>>()
 
-                    val objectId by stringArgument()
-                    objectId range (3..16) matches "[a-z0-9_]{3,16}".toRegex()
-                    objectId invalid { reply(!"Invalid object ID $provided") }
+                    val newObjectId by stringArgument()
+                    newObjectId range (3..16) matches "[a-z0-9_]{3,16}".toRegex()
+                    newObjectId invalid { reply(!"Invalid object ID $provided") }
 
-                    ("create" / objectId) {
+                    ("create" / newObjectId) {
                         runs<CommandSender> {
-                            objects.putIfAbsent(objectId(), hashMapOf())
-                            reply(!"&aCreated object ${objectId()}")
+                            objects.putIfAbsent(newObjectId(), hashMapOf())
+                            reply(!"&aCreated object ${newObjectId()}")
                         }
                     }
 
-                    val existingObjectId by simpleMappedArgument<HashMap<String, String>>()
-                    existingObjectId getValue { objects[this] }
-                    existingObjectId suggests { objects.keys.toList() }
-                    existingObjectId invalid objectId.invalidCallback.first()
+                    val existingObjectId by multiChoiceArgument { objects }
+                    existingObjectId invalid newObjectId.invalidCallback.first()
 
                     val path by stringArgument()
                     path matches "([a-z0-9_]\\.?)+".toRegex()
+
                     val value by stringArgument()
                     ("set" / existingObjectId / path / value) {
                         runs<CommandSender> {