The exact problem is described here:

http://jboss.org/index.html?module=bb&op=viewtopic&t=77625

I need to be able to assign 2 (or more users) to a task, at least the one who launched the process and his boss (for example). I inform you that although i updated this table the assignment was made only to one user and not for two (websale example) as i think it should.

I hope it helps to help you improving your great work.
If you need more help don't hesitate to contact me.