Copy ActiveDirectory-Groups from one user to another

XADGroupCopy.ps1

function XADGroupCopy() {

param(
	[parameter(Mandatory=$true,Position=0,HelpMessage="Von welchem User sollen Berechtigungen kopiert werden?")]
	[String]
	$fromUser,
	[parameter(Mandatory=$true,Position=1,HelpMessage="Welcher User erhaelt die neuen Gruppen?")]
	[String]
	$toUser
)

$antwort = read-host "Sind Sie sicher? $fromUser --> $toUser (ja/nein)?"

if ($antwort -eq "ja") {
	$UserGroups = Get-ADUser –Identity $fromUser -Properties memberOf | Select-Object -ExpandProperty memberOf
	# check if Groups are Found
	$UserGroups | % {
    # Add User to each Group
    Add-ADGroupMember -Identity "$($_)" -Members $toUser -ErrorAction SilentlyContinue             
	}
} 
else {
	write-host "Abbruch: Es wurden keine Gruppen kopiert!"
}

}