Set Beam's Geometric Parameters

Does anyone knows how can I set a Geometric Position parameter of a beam in Revit using Dynamo?
I tried to use Elemente.SetParameterByName (Picture), but didn’t succeed.

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It should work if you type it correctly i.e. “z Justification” with a space

Still doesn’t work!

It also takes numerical input and not a string:

Also it is an instance parameter and you’re feeding it a family type right now.
You should select all instances of that family and change their parameter.


Thanks man!