image upload response?

Hi,

I have turned on the image uploader functionality, and am successfully receiving the posted images, however, I can't quite figure out what i'm supposed to write back from the request, and the docs don't seem to cover it.


i'm currently rendering:

<script type="javascript">
            window.parent.OnUploadCompleted( '0', 'some real url here');
          </script>

and get an error dialog about "missing image url" . please advise.

Thanks,

-mml