How to reference a family type parameter value in another parameter's equation

[brenTRONwiberg]

I have a nested family which is associated with a "family type" category parameter. So basically I can switch out the nested family with other families or types.  I would like the value of this parameter to be used to control other parameters.  

I cannot figure out how to reference the value of the family type parameter in equations so that revit will recognize it.  Does anyone know what syntax I am supposed to use in this instance?

Here is a video showing it better:

https://www.loom.com/share/e73a34ebb764402bb9485344ed9add0d?sid=23c5454b-274f-4757-a4d6-aed90e0472b1

[mhiserZFHXS · Accepted solution]

You can't, unfortunately.

Lots of people bringing up shortcomings with the parameter system today. Listening, Autodesk?

[brenTRONwiberg]

I was afraid that was the answer!  I wish they would make some changes to the family editor.  2025 was a good step in the right direction with the adjustment to arrays, but we could really use a drop down parameter, radio buttons, and for heaven sake, let us sort parameters by dragging!

[brenTRONwiberg · Accepted solution]

@mhiserZFHXS I have a good friend who is also a family making pro, I posed the question to him at the same time I posted here.  

This is his response which is a great work around:

https://www.loom.com/share/80335d1db9a7463e9800a4973ba25723?sid=653e304d-0ecb-4b63-895f-40b24daba6fe