Occasionally it is required to change the duct lengths of branch ducting to diffusers. A length parameter exists; however, it is uneditable.
It would help an extreme help if I could edit this parameter to fix the duct lengths. Sure, it is easy to edit a few cases here and there without the parameter, but there are cases of thousands of diffusers and that is when such a feature would be handy.
In 99.9% of the cases, the length "basepoint" would be from the tap/tee itself. Thus, if the length would be changed, the tap position should remain the same and only the duct is edited. Flex ducting or anything attached to the duct to change along.
Duct between tap and flex