Browsing multiple photos in flash for android

I am trying to develop an application for android phone using flash/as3, I want to know How to browse multiple photos from gallery using media promise or camera roll. Right now I am able to browse only one photo at a time.

       var mediaFile:CameraRoll = new CameraRoll();
       var imagePromise:MediaPromise;
       CameraRoll(mediaFile).browseForImage();

is there any code or resources that I can look at.