$workflow.OperatorName not working in PMADLDS Helpdesk site (4384104)

Following operators work in Password Manager for AD v5.14.3, but they don´t work in PMADLDS v5.18:

$workflow.OperatorName
$workflow.OperatorInfo
$workflow.OperatorIp
$workflow.XForwardedFor

Status:
The Password Manager product team has raised Defect #726198 to include a fix in Password Manager v5.20.

Workaround:
Use the following script:

function PreLoad($workflow, $activity)
{
# On AD LDS, $workflow.OperatorName / OperatorInfo.UserName are empty.
# The operator objectGUID IS available - resolve the name from it:
$operatorGuid = $workflow.OperatorInfo.UserId
$server = "adldshost:389" # your AD LDS host:port
$entry = [ADSI]"LDAP://$server/<GUID=$operatorGuid>"
$operatorName = $entry.Properties["userPrincipalName"].Value # or "cn" / "displayName"
$operatorName | Out-File -FilePath C:\Temp\Logs\Details.txt -Append
}