Hide button

How to hide PF_Param_BUTTON in AfterEffects SDK C++?
I have tried making a param_copy and setting ui_flags to PF_PUI_INVISIBLE and then calling PF_UpdateParamUI of ParamUtilsSuite3.

Also tried uu.change_flags = PF_ChangeFlag_CHANGED_VALUE after setting PF_PUI_INVISIBLE
But nothing works to make the button invisible.
Although if I try doing the above with PF_Param_FIX_SLIDER, it becomes invisible, but nothing works for the button.

Requirement: On tapping the button, I want it to hide