test.rvt (1.4 MB) her is the dyn. and revit files.
som basic i need to filter duct and pipes out. when i have to get a input from the walls (parameter). later i wil have a excel sheet to change peramenter values and push back to revit.
i can do is. Test.dyn (10.6 KB)
Your dyn can be simplified if you just need to split the wall elements away from the rest of the categories. The grey section I’ve labelled “Filter by Category” can be further reduced by using nodes from packages, e.g. Springnodes or Rhythm