How to update WallFoundation Parameter Type Width (Read Only Error)

Revit
1

Trying to create a dynamo script that will find the Wall Foundation and update their parameters from values pulled from a excel sheet. When I get to SetParameterByName I get a Read Only Error. As of now i am just testing it on the Width Parameter.

2

UpdateFoundation

3

Two quick things:

  1. Your graph image needs to be re-uploaded as none of the node names are visible - zoom in so you can clear read a given node, and use the camera export (top right of the window) to export the entire canvas as a graph.

  2. How would you update this parameter manually in Revit? With something like this the steps in Dynamo are mostly the same, but with different methods of going though the steps.

4

Thank you for the tips. The second one got me brain storming and was able to get a step closer. I was using WallFoundation for my Element Type, when the correct one was WallFoundationType.

5

Hi,
Was there any luck on this?

I’m trying to update the “Width” of a wall foundation.
But the catch here is - It is a read-ony parameter, with the type parameter inside being the same name “Width”.
So essentially so far any nodes I use, only looks for the external read only parameter and fails. Is there a way I can force a Type parameter change?

image
image

6

There are few things I did to get this to work.

  1. There is a node from the Rhythm package called Elements.SetParameterByNameTypeOrInstnace
  2. For a few cases I created an extra Type Parameter and made the Revit Read only Parameter, like Width, equal to the Parameter I created. Then used Dynamo to Set the parameter I created.
  3. For Foundations in particular, I was using WallFoundation for my Element Type, when the correct one was WallFoundationType.

Good luck, Hope this helps.

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