using flash media server with moodle whiteboard

I am trying to use flash media server with moodle [Course Management System] to use it the steps tells me to add this line of code :

$CFG->fms = 'YourFmsLink';

as following this link :

http://moodlemodules.netcourse.org/2007/11/17/whiteboard/

well I instal开发者_开发问答led my whiteboard module and it works but after I draw a shape on whiteboard write on the whitebord my writings will disappear

what is the problem ,Thanks in advance

well there is another solution for your problem A nice open source web conferencing system called

BigBlueButton

BigBlueButton have Module for Moodle videos to show how the activity modules work http://blindsidenetworks.com/video/moodle19/index.html

this video to show how to use whiteboard

http://bigbluebutton.org/sites/all/videos/whiteboard/index.html

hope it's useful