Reference Lines in a Profile Family

[ZoltanFerenczy]

Is there no way to create reference lines in a profile family?

I need to control the angle of lines in the profile based on the positions of reference planes. Usually, reference lines are used for this.

I can use an <Invisible Lines> type line to control the angle, but Revit gives me an error that "Stairs tread/riser profile must have one loop. Wrong profile will not be shown in profiles list in Run/Landing Type properties." I thaught that lines that are <Invisible Lines> type in profile families are not part of the profile loop.

[L.Maas]

I think you will be stuck with your trigonometry.