Roccinio, thanks for the help, your solution worked perfectly.
I do have one other question though which is somewhat related. I created an object with the Jump Thru Behavior and noticed some strangeness when using it. Essentially the character is able to stand on the vertical middle of the platform. You can see what I'm trying to say in this gif.
<img src="http://i.imgur.com/oJ8wVqE.gif" border="0" />
I basically just want to know if this is how Jump Thru platforms are supposed to work, and if it can be changed so it doesn't do this. Let me know, and thanks again for the help.