Set Parameter – Error Parameter is Read only

[Joseph_Peel]

Level Parameter Bug - Read only

HI I’ve been trying to change level for pipes too, but my python skills are very limited, but I think that I have found the right BuiltInParameters!! You can see my code below. I get an error in line 24 [image] Another issue is, is it possible to use the start and end offset param or is it not possible?? they look as they are read only. Thanks in advance Here comes the code: import clr clr.AddReference(‘RevitAPI’) from Autodesk.Revit.DB import * clr.AddReference(“RevitNode…