So if you're like me and wanting to get mouse scroll events dispatching on a mac you might be running into some problems. Mac OSX doesn't register mouse scroll events from flash player. The solution is to call an external interface and get the mouse scroll through Javascript.
Gabriel from Pixel Breaker has a more in depth solution.
http://blog.pixelbreaker.com/flash/as30-mousewheel-on-mac-os-x/