ParameterFilterElement.ByRules error

Any idea why I’m getting the error below? I am not understanding what the difference between Category and Revit.Elements.Category.

I think it’s actually the filterrule.byruletype node that’s causing your problem. You’re not providing an input for the value so it’s passing a function not a filter rule.

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Wow, I can’t believe I didn’t see that. Thanks for the quick response.

No problem. Glad I could help.