PowerShell - Error in path while Set-FsrmQuota - powershell

Question

I'm trying to make a script that changes the quota of a specific directory on a remote server. For that I'm using the following code ($Quota and $chosen_username enter as parameters):
$prefix_path = "C:\Shares\Users\";
$path = $prefix_path + $chosen_username;
if($Quota){
invoke-command -computername $servername {Set-FsrmQuota -path $path -Size $Quota+"GB"}
}
if((invoke-command -computername $servername {Get-FsrmQuota -path $path} | select #{n='QuotaSize'; e={$_.Size / 1gb -as [int]}}).QuotaSize -eq $Quota){
return "Success."
} else {
return "Failed."
}
And it is giving me this error:
Cannot bind argument to parameter 'Path' because it is an empty string.
+ CategoryInfo : InvalidData: (:) [Set-FsrmQuota], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationErrorEmptyStringNotAllowed,Set-FsrmQuota
+ PSComputerName : ServerName
I've done debug and the value of $path is correct.

Answer 1

When using invoke-command on a remote computer, the local variables are unknown for the remote host, so you have to use either:
the using prefix for PS >= 3
invoke-command -computername $servername {Set-FsrmQuota -path $using:path -Size $using:Quota+"GB"}
the argumentlist parameter for PS < 3
invoke-command -computername $servername {Set-FsrmQuota -path $args[0] -Size $args[1]+"GB"} -argumentlist $path,$quota