[image] Hello everyone, good morning. I’m trying to create a Dynamo routine to add shared parameters to multiple families at once. In other words, I want to apply a parameter to all families of a certain type at the same time — but I’m not having much success. Where might I be going wrong? …

Hi @cintiamiranda21 , see if that works, [image] ADD number shared parameter via dynamo Packages Try from this. . [18.Shared parameter creation using Excel for family_2020-09-01_10-14-43] 18.Shared parameter creation using Excel for family.dyn (20.4 KB) also this, …

[image] I still don’t understand. Does this solution create parameters in all template families? It didn’t work in any of them, not even when loaded, can you guide me?

I might be wrong. But i guess you have to open the actual Famlies apply the changes and close them (and / or reload them in your project). AFAIK you can’t add any Parameters from within the Project.

Create parameter in family types

Revit

_Vijay June 3, 2025, 12:32pm 2

Hi @cintiamiranda21 , see if that works,

also this,

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Create parameter in family types

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