Hello,
I’ve got a very stupid question, wondered though, whether anyone can help.
I’m doing the Advanced Tutorial Unit 2 and cannot even start with it. The issue being that I need to select a line from a mass element and where the tutorial seems to do so, in Revit I can only pick up the mass but not the line.
In my defence, I’d like to say I am not (very) skilled with Revit since I’m using Dynamo mainly to apply it to Robot Structural Analysis 
Thanks