Forgot "void" on rotate() when typing in the example but the actual problem is a null timerService variable, as stated. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3958281#3958281 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3958281