[CmdletBinding()]
param(
    [Parameter(Mandatory,ValueFromPipeline)][string]$VM
)

process {
    $ErrorActionPreference = "Stop"
    write-output $VM
    $collection = @()
    try {
        Write-Output $desktop
        $collection += get-vm $desktop
    }
    catch {
        #$collection += "$desktop does not exist"
    }
}