Split Brep Multiple

good evening, I created some panels in the facade of my building and now I have to subtract the pipe to create the space that exists in reality. I tried to use split brep multiple, but the result is incorrect. can someone help me?
PANNELLATURA.gh (34.3 KB)

nissing

i’m sorry, probably my post is incomplete. I used some plugin, and the model is a revit model that i imported in grasshopper with rhino inside. The face of my bulding must be paneled with the plugin lunch box. There is some screenshot. I hope you can help me.



the problem is that i can’t select the surfaces i get from multiple split brep. how can I do?