Userform macro, how to add config specific property?

I am trying to add properties to custom and configuration specific fields from a single userform

Below is a simple user form with 2 different properties. I like to add "Description" to custom and "Part_ID" to configuration specific

But both going to custom. I couldn't figure it out and make the 2nd property working.

Can someone please help me

Thanks in advance..

SolidworksApi macros