hitTest updating

after a deep search of the forums, i have been unable to find an answer to my question.

i am using this code as a way to perform a hit test on two objects.


initially, after i run a trace on this, it comes out false. what i am wanting to know is how i can continually update this so that when my ease clip glides into the other clip, it will recognize it and do something like this.

   if (isTouching){

the problem is, my hit test seems to be static and does not update. anyone who could explain to me how to make it check this condition would be much appreciated. maybe something with setInterval?