Character falling through moving object using iTween

I everyone! I know that there's some questions like this one, but they didn't seem to quite help me out.

Well, I'm working on a remake of one of my old platform games, though I solved it back then by making my character (a simple ball) a child to the obstacle when it hits it's colliderbox. And also the other way around when it left the colliderbox it went back to "normal".

The test obstacle I'm using right now is a 6x2x100 box. With a iTween script attached to it:

`iTween.moveTo(gameObject,{"y":20, "time":2, "loopType":"pingPong"});`

Hope my question is clear enough to you guys. In advance Thanks

There's a new example that shows how you can pull this off on the examples page. Hope it helps! Take a look here!