AS3 Overriding

I've only recently been working with actionscript and I got a little sad when a design principle from java doesn't exist in it. Abstract Classes.
Anyway I have a class Gesture. There are several subclasses of gesture, such as AimGesture

So I have another class which recieves a reference to an AimGesture class as type object. I want to be able to cast the object as a Gesture and then call a method. But I want the method to perform differently depending on what type of gesture it is.

My question is, if I override a method in Gesture in the AimGesture class, and then have a reference to the AimGesture object (casted as Gesture) which method gets called: The one in Gesture or the override in AimGesture.

If its not the override, i can always redesign how things are working but I would like a way to implement this concept cleanly... in the future

-Thanks for any help

I wonder, wouldn't it be both easier and more self evident to just test it? I find that is way better to learn by doing than by theory. Theory is good up to a point, then actually doing is preferred. What would be the purpose of theory if not putting it into practice? Unless you want to make philosophy

And yes, overriding the method will obviously call the override method, otherwise what would be the purpose of overriding?