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Is it possible to create an instance parameter that is restricted to a specified range (say, from 0 to 25 feet)? So that if the family is instantiated, and the user changes that parameter to some invalid value (like -100 feet) then it will be reset to 100 feet?
I'm assuming that this would be done using a conditional statement, but I keep getting the error "circular chain of reference" whenever I try to make this happen.
The circular reference error occurs because probably you are including in your conditional statement the same parameter used for user input. You need another parameter to avoid this error, with this formula, based on the user's input parameter:
IF (Length < L Min, L Min, IF (Length > L Max, L Max, Length))
See illustration.
Alfredo Medina _________________________________________________________________ ______ Licensed Architect (Florida) | Freelance Instructor | Autodesk Expert Elite (on Revit) | Profile on Linkedin
