Hello YasserSelima,nI didn't know that. This procedure might become handy for certain situations. That being said, I think if I called that function my_pressure_profile(...) from a DEFINE_ADJUST, entering as inputs of the function the domain and the boundary thread id, I am afraid that the value assigned to that boundary would be overwritten by the value you leave as default on Fluent GUI, under Boundary Conditions and Pressure Outlet.nRegardsn