FaceBook multi friend selector

Hi
Have anybody tried using the facebook multifriend selector with vaadin.
I have a working url to the Friend selector that i set in a embeddd object.
The page contains a iframe to facebook but the page is white in the vaadin window.

http://wiki.developers.facebook.com/index.php/Talk:Multi_friend_selector#Working_sample_of_Multi_Friend_Selector_for_IFRAME_applications

Code

Embedded e = new Embedded(“”, new ExternalResource(“http://www.facebook.com/multi_friend_selector.php?action=…”));