Facebook Desktop AIR Graph API - Actionscript 3 - Login as page and post photo on page wall

Do you know how can I login as a page and post a photo on wall of this page? I ca开发者_如何学Gon post on wall, but the photo don't appears just the text. Thanks!

Code:

var bitmapData:BitmapData=new BitmapData(mc_photo.width, mc_photo.height);
            bitmapData.draw(mc_photo);  
            var bitmap:Bitmap=new Bitmap(bitmapData);

            var values:Object = {message:'My photo caption', fileName:'FILE_NAME',image:bitmap};

            FacebookDesktop.api('/253577334667618/photos', handleUploadComplete, values,'POST');

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I think that what your are doing wrong is the name of the parameter for the photo, 'image', because the value it should be 'picture':

var values:Object = {message:'My photo caption', fileName:'FILE_NAME',picture:bitmap};