Difficulty with multitouch (swipe + pinch zoom)

First, is it just me or is the snippet zoom function pretty poor in terms of being up to date; it seems like I can zoom and simultaneously move on a browser but I'm having problems getting my native app to do the same. 

I found 1 resource on this :

http://www.flashandmath.com/howtos/zoom/

So if you have quick tip on MatrixTransformation I'd be much obliged.

And, when I add anything like a zoom or pan to the frame, the swipe function (which is mandatory pretty much) seems to disable.  Not sure where to go here.