Ok, I have looked around, and I don't know how to make a prop_dynamic button work. I was thinking of using the screen_buttton, but I don't know how to make the button trigger from the action button on the portal gun. I guess that would be my main problem; figuring out how to trigger with the portal gun.

If you're trying to make the pillar button work, there is an entity called prop_button. If not, you can have a different button model and put a nodraw textured "func_button" on the part you want the player to be able to press, with the appropriate outputs.

Vordwann wrote:
If not, you can have a different button model and put a nodraw textured "func_button" on the part you want the player to be able to press, with the appropriate outputs.

Thanks. It's just one of those things that are so simple, that I couldn't find out how to do it.