Way to find center reference of conduit

[ambarc4URCP]

I want to develop an automation solution that draws a center point dimension of conduit with respect to the grid. I have found a line reference from conduit geometry. But calling the create dimension function gives an error in the invalid number of references. Does anyone have any idea? 

[jeremy_tammik]

Well, the first thing I always suggest is to research for the optimal solution and best practices manually in the end user interface. How would you achieve what you need there? You can use that solution to research how it is represented in the BIM database elements properties and relationships:

• https://thebuildingcoder.typepad.com/blog/2017/01/virtues-of-reproduction-research-mep-settings-onto...

That proves that the desired solution is possible at all. Once that is clear, how to achieve it programmatically? Some tricky dimensioning tasks were solved using stable reference voodoo:

• Reference Stable Representation Magic Voodoo
• Voodoo Magic Retrieves Global Instance Edges
• Hatch Line Dimensioning Voodoo
• IFC, Dimension and Reference Intersector with Links

You might want to check whether the conduit centre line Curve object has valid end point references that you con use, cf., the GetEndPointReference method::

• https://www.revitapidocs.com/2024/5619a3fd-38e1-fb56-7286-2e5f33a3b2b8.htm

What you really need is a midpoint reference, though, meseems.