How to Create a Collection Variable

#Example 1
$CollectionID = "PS10001F"
$CollectionSettings = Get-WmiObject -Namespace 'Root\SMS\Site_PS1' -Class 'SMS_CollectionSettings' -Filter "CollectionID =  '$CollectionID'"

If($CollectionSettings -eq $Null){
    $Arguments = @{
        CollectionID = $CollectionID
    }
    Set-WmiInstance -Namespace 'Root\SMS\Site_PS1' -Class SMS_CollectionSettings -Arguments $Arguments
}

$CollectionSettings = Get-WmiObject -Namespace 'Root\SMS\Site_PS1' -Class SMS_CollectionSettings -Filter "CollectionID =  '$CollectionID'"

$CollectionSettings.Get()

# New Collection Variable
$WMIConnection = [WMICLASS]"\\Localhost\ROOT\SMS\Site_PS1:SMS_CollectionVariable"
$NewCollectionVariable = $WMIConnection.psbase.CreateInstance()
$NewCollectionVariable.Name = "APP02"
$NewCollectionVariable.Value = "AppV5"
$NewCollectionVariable.IsMasked = $False

$CollectionSettings.CollectionVariables += $NewCollectionVariable.psobject.baseobject
$CollectionSettings.Put()