We build HVAC systems, and to speed up making a material take off through schedules, I'm trying to add a shared parameter to all ducts and fittings, giving them a description on what they are (the family and type names are impractical with all the BIM info that is stashed there).
When opening a fitting family, made by a 3rd party (in a revit version years ago, I guess 2015), and trying to add a parameter, triggers an error in a different parameter, resulting in cancelation of adding the parameter. Revit states that the formula should start with an = symbol (which it should not, cause this is build in to the formula field). Adding this = symbol, triggers an "unexpected = symbol" error. Trying to remove the formula all together triggers even other errors.
Does someone have a clue whats going on, and how I can fix / work around these errors?
In the video I tried to show all the errors.
Edit: I can't even delete the parameter, it gives the same error: Invalit input for sg: Enter a value or a formula starting with "=".
Thanks for your time!
Working in Revit 2023.1
23.1.50.23
20240709_1030(x64)
2023.1.5
kind regards
