Papervision 3D Materials

Hey, does anyone know if it’s possible to change a cube’s materialList at runtime in Papervision 3d?

I have a cube already drawn up with two different images on the front and back. When it’s clicked, I want to change the image texture on the back and then spin it to show the recently loaded image’s side. Spinning’s fine, I’m just unsure how to change the cube’s materialist.

Any ideas? Thanks as always guys!