UME Data in Process Context

Hi experts,

I am trying to retrieve User Data out of the UME and use them in the Process Context in NWDS, e.g. name, department, tel...

The goal is to use those attributes and store them in a Visual Composer Form in each Task to identify the actual and all the previous Task Owner.

All that I was able to do so far was getting the principal ID out of TaskOutput/TaskAttributes/actualOwner. But is it possible to retrieve all the other attributes the same way? We are using NW 7.31 SP4.

Thanks in advance.

Regards,

Alex