Thanks for ur answer. But i didn't explaint me well (i think). I won't use the JBPM user and groups. I wan't to use my own user and group :). I found some Topics: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=91941 and http://www.jboss.com/index.html?module=bb&op=viewtopic&t=68304 and http://docs.jboss.org/jbpm/v3/userguide/taskmanagement.html (chapter 11.11) and http://kickjava.com/src/org.jbpm.identity.index.htm but stil, i don't know how to use my own User and Group Class. Maybe myUser extends User? But i don't have a password or email in my own users like they are in JBPM Users. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4027172#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...