ThinPro set PreAssignGroups Registry by Script

Hello together,

we are using HP T620 with ThinPro 5.2 to connect to our Citrix environment.

Is there a possibility to set this registry key:

root > hpdm > agent > PreAssignGroups

by script?

Example what I want to set in this key: P1='Germany';P2='City';P3='Company'

If yes, where do I save (HDD and registry) this script so that will be execute on e.g. start?

We don't want to deliver this groups by DHCP, because we have dynamic information, which we want to set in this groups. To manage this with DHCP is to many administration for us. And a manual assignment is to static for us.

Kind regards

Lukas