Filter furniture family by Dimension value from a shared parameter

I’m trying to collect all the furniture family from revit and trying to filter those families by width values that are over 500mm.
I’ve tried to find the element.decompose component but couldn’t find it in gh. Is there another way to get info of the family type parameters.
I’ve looked into by using the category.filter, elementtypes to access the parameter but not working also.

Any ideas are welcome. Thank you!

Here’s a quick example of filtering placed families by type, getting a parameter and using cull pattern to get larger than a given value.


Thank you ! Sorry for the late reply.
I got it to work!