Block parameter value propagation

I have a parameter  X defined at Model and WT Part level, flagged as designed on Creo.

If  the CAD model  is owner of the WT Part, the value of  X at the CAD Model  level override the X value at the WT Part level.

I need to block di propagation for the parameter X, I mean  disconnect this link for the specific parameter from CAD Madel and WT Part

Does exist a preference the allow to block this propagation for e specific parameter?

Many thanks for any help

Beniamino