I want to make a ramp for my game where there is a maze and a ball that rolls around in the maze. I have my maze created already and the walls are solid for the most part, although the ball sometime goes through them. How do I make a ramp behave like a ramp using collision detection?

Here is a picture of my ramp:

http://cid-6ccb308ebedf3033.skydrive.live.com/self.aspx/Public/rampedit.jpg
(The red arrows point to the ramp)

I want the ball to be able to roll up the ramp, but the ball rolls up to the beginning of the ramp and then stops. I think the ramp has a box for collision detection around it and will not allow the ball to roll up it.
How can I solve this?

Have you looked at Workshop 19 of the Lite-c Workshops? It has the same exact thing you are designing and it features ramps...

http://server.conitec.net/down/litec.zip