Not possible to obtain "String Value" attributes for actual variant parameter (automation interface)

Hello all,

I am trying to read the parameters that were set in the decision set for my variant. (PTC Integrity Modeler 9.2). I am using the automation interface. It is no problem to get other attributes like "Id" or "Last Change Date UTC". But for the "String Value" attributes I always get null values, even if the parameters are set.

I can not explain it, I have also tried reading the values from the decision set in the offered cabin example - same problem. Here is the automation interface code I used for the cabin example:

I don't get any error messages and the ExtendedErrorInfo properties also stay empty. Could it be an internal problem? Help would be appreciated.

Thank you and best regards

Max