Why cant i create a dimention line here thanks

[c.poupin]

Hi,

faces references are sometimes FamilySymbol references, instance references are required for dimensions

Here is an example with a workaround:

Create Dimension Between Column Reference (Center) and Grid

faces references are sometimes FamilySymbol references, instance references are required for dimensions [create_columns_dimension] import clr import sys import System # clr.AddReference('ProtoGeometry') from Autodesk.DesignScript.Geometry import * import Autodesk.DesignScript.Geometry as DS #import Revit API clr.AddReference('RevitAPI') import Autodesk from Autodesk.Revit.DB import * import Autodesk.Revit.DB as DB clr.AddReference('RevitNodes') import Revit clr.ImportExtensions(Revit.Geomet…