Curtain Panel Randomize Selection Help

Hi Bros,
I created this graph to randomize curtain panel types based on pervious topic.

Everything working well, the only problem is that i have to select the curtainwall one by one and it is taking long time that i have too many of curtains in the project.

I tried to replace “Select Model Element” node with any other nodes referring to curtain wall type, but nothing works.

I wonder if someone can advise.

thanks in advance

How about getting all panels and selecting from the index?