Not able to send file to group chat openfire

hey , i am creatine a rooms in openfire.

want to send files in a room so that it can distribute that file to all room occupants.

I am done with one to one file transfer by following this post :

http://harryjoy.com/2012/08/18/file-transfer-in-android-with-asmack-and-openfire /

Now i am not able to send the file in a group. Reply soon