Hi Japhy, thank you so much!
This is now setting all segments of a dimension.
I just want to set ether a single segments of a dimension or multiple seperatly selected segments. (you can select seperat segments with the TAB key)
Do you see also see a way to achive this?
Maybe you can also point me to a good resource to getting started with the Revit API, Rhino.InsidenRevit and Python?
This would be a great next step for me to be able to exted some features myself.
Thanks you for your quick and very helpful replies 