Using Dynamo to control Revit generic family parameters

[Joseph_C_Lee]

I made a simple Dynamo graph to find a way of using Dynamo to insert a 2d lines Generic Family (X-Z plane) with the ability to control the X and Y dimension on each family (a rectangle). I use the Element.Parameters node to list the parameter of the selected family but I don’t see the dimension parameters X and Y in the list. Is it not the right node to use? Any other nodes I can use to control the dimensions of the rectangles?

[jacob.small]

Try skipping the FamilyType.Family node. The parameters are associated to the type, not the parent family or the instance.

[Joseph_C_Lee]

This testing graph can solve the problems. I will test it in the more complex parameters.