So i have already looked at a few other post on this topic and thought what this node would work for me,
when the workflow is run i see only an empty list.
My aim is to to produce an automated formwork wall on the vertical sides of the pile caps already modeled in revit.
You should switch to the new built-in node for creating wall by face - I think it’s in any of the 1.2.x builds. I will retire the Clockwork node pretty soon.
Ah, and looking at your graph, I think the issue is that you need to pick the face of a mass, not a structural foundation. Limitation of the Revit API, unfortunately.