Menu Back keys not recognized when testing on Device

Helo,

I've been searching over the web, without success finding a solution,

hope to find an answer here.

I'm new to Air for Android Dev, so i found and downloaded a nice sample app to learn from.

Here's a relevant code:

import flash.events.KeyboardEvent;

import flash.ui.Keyboard;

stage.addEventListener(KeyboardEvent.KEY_DOWN, onKey);

function onKey(e:KeyboardEvent):void {

       if(e.keyCode == Keyboard.MENU) {

            e.preventDefault();

            trace("menu");

       }

}

Everithing was fine, the code was working at simulator, and on my device,

so I created a new "Air for Android" document, and wrote the very same code just to test.

After publishing my new document (very same to the one I've downloaded), it stoped recognizing KEY_DOWN event on my device,

but when publishing to a simulator everything is fine and working.

Hope that someone here has an idea of what could be the reason for this problem,

Aline.