Problem with Update-BTNotification

[Silloky]

I'm trying to make a small PowerShell program to display a toast notification that will show me in real-time how a copy job is doing. For the moment I haven't coded origin/copy size-compare program, so it's supposed to go up of 1% every second.

$image = New-BTImage -Source "D:\Pictures\Profile image.png" -Crop Circle
$binding = @{
    text1 = "Downloading your files..."
    text2 = "Your files are being downloaded so they can be available offline."
    image = $image
    value = 0
}
$progress = New-BTProgressBar -Status "Downloading..." -Value $binding['value'] -Title "Download" -Verbose
New-BurntToastNotification -Text $binding['text1'], $binding['text2'] -AppLogo $binding['image'] -ProgressBar $progress -UniqueIdentifier "toast" -Verbose
foreach ($n in 1..100){
    $binding['value'] = $binding['value'] + 0.01
    $binding['text1'] = "hello"
    Write-Output $binding
    Update-BTNotification -UniqueIdentifier "toast" -DataBinding $binding -Verbose
    Start-Sleep 1
}

But it doesn't seem to update ! The -Verbose doesn't show any error, and Write-Output $binding is clearly evidence $bindings is being updated every second...

I don't know what I'm doing wrong...

Thanks for any answer,
Silloky