Change Typ Parameter on Structural Framing fails

Hello, I have some custom steel nodes that I want to model as beams in Revit to connect them to other steel components. All nodes are cylinders with different diameters and different heights.

For the family I used the round steel beam. When I want to change the type parameter diameter, I get the message “1. Cannot to set value ‘0.113137’ to parameter ‘Diameter’. This value would be 11.3 cm in Revit. {2742086}”

Why can’t I change the parameter? Is there another way to model the nodes and still create connections to other steel components?

To model all nodes with it, I was planning to simply copy the family n times and then change the type parameter for each family.

Thank you very much

Are you using the same units ?

Your Element Input should be type. as you are trying to change the type parameter not Instance.

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Thank you very much! Works perfectly

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