SOAP / GetVersionHistory ?

Hi,

we are already getting some information over SOAP interface from Windchill, but when we try to use the function GetVersionHistory, it fails: This is example of parameters:

- ufids, item: VR:wt.doc.WTDocument:1481979362:534788860-1193866430993-29816902-52-4-16-172

- propertyNames, item: versionInfo.identifier.versionLevel

Does anyone have experience with this one? How would I set proper parameters?

Regards!