Read Boolean Value of family

I apologize if this is an easy task, but I cannot figure it out.

I have many instances of a family, and I want to check the value of the boolean parameter. How do I name the parameter and get that value? I tried “GetParameterValueByName” but it returns a blank list.

Many thanks!

Can you show the properties pallet for a family instance in Revit, and your graph showing the failed results?


image

What’s the input coming out of your ‘All Elements of Family Type’?

If it’s an empty list too then there’s your issue (probably you don’t have any elements on that family type used in the project).

There are 209 instances of this family in the project.

Are they all in the view directly, or in a design option, group, or legend?

If you select one directly instead of using the bulk selection does it work?

With one selected what parameters do you see if you use an Element.Parameters node?

I restarted Dynamo and the node is working now! I guess it was a glitch of some sort…