How to invoke a Package Redistribution

$PackageID = 'PS100005'
$DistributionPointGroup = 'New Distribution Group'
$DPGroupQuery = Get-WmiObject -Namespace 'Root\SMS\Site_PS1' -Class 'SMS_DistributionPointGroup' -Filter "Name='$DistributionPointGroup'"
$DPGroupQuery.ReDistributePackage($PackageID)