So i am still a bit of a noob here, but i am curious why i am not capable of editing the class for my glazing in the window wall (3d modeling). I can change the frame/mullions to aluminum and get a dark frame, but my windows aren't transparent. I select the glazing class "glazing class-3" then edit that so the opacity is 10% or 4% or something, but the glazing still remains 100% opaque. Can anyone help?