The situation we are working on is our Panelboard Families.
in 90% of cases we want our Mains and our MCB rating to match. We created a Parameter that we reference to the type for the panel amperage that we called "Panel Rating". So if we change a 200A panel to a 400A panel it will automatically swap the Mains rating to 400A. Now for the MCB Rating, We created a Yes/No Instance check box called "MCB Rating Edit".
What we want to do is: if(MCB Rating Edit, Panel Rating, [Formula does nothing and leaves as instance parameter])
Revit Syntax is if(Boolean, Result if True, Result if False)
The roadblock we are running into is how to make revit do the second part. I have exhausted my understanding of Revit, and potentially this is just impossible. It theoretically should be easy, but I don't know if revit supports a "Dont do anything" Formula response. We would really prefer to not have an additional instance parameter to edit.
