I am trying to have a 3D object change it's opacity when you click on it- and I have been sent a code sample and I have sat through and tried to figure out the coding- could anyone just narrow it down for me? Because I am guessing it is the code MTSMaterial ID="0" MTSColor Type="Diffuse" r="#" g="#" B"#" /MTSMaterial is that right? but the object that i made is in 3d how do i change the opacity if it is already an object that I have imported from 3ds MAX??