Hi! Does anybody knows why in FLASH when I apply a Code Snippet (gesture) (Zoom IN and OUT), when I run the app on my device, distorts the image?

Hi! I´m trying to develope an app by miself. A hello world kind for now. All fine, but when i put the code (snippet) to zoom in and out, I run the app and, yeah, it zooms in and out but DISTORT de image. It doesn´t scale it "in scale". What should I do? Thanks a lot!