How to get parameter value of a family type update in dynamo when I change it in the model in Revit

Hello

I want to get the parameter value update in Dynamo when I change it in the model in Revit. I want the height of the beam which initial value is 5 meters as the following image:

When I change the value in the model for the type parameter and go to Dynamo and run manually the code the value is not update, it still appears as 5 meters.

How can I manage this problem and get the parameter updated.