All element of category errors

[Kulkul]

You need wall types to set compound layer. Use forum search to find many topics related to this. Below is one of them:

Set family parameter \"Material for model behavior\"

Hi Dynamocando, There is a custom node from “Clockwork Package” called “FamilyType.SetCompoundLayerMaterial”. Try using that see if it helps. Below is an example of walls. [SetCompoundMaterialLayer]