Hello Ed, I've tryed moving it to the leave node. My new decision node XML is now : <decision name="Client actif ?"> | <event type="node-leave"> | <action name="decisionWhenLeaving" class="fr.jl2tho.tutorialjbpm.action.DecideIfCustomer"></action> | </event> | <transition name="Oui" to="Enregistrer la Question"></transition> | <transition name="Non" to="Prevenir le commercial"></transition> | </decision> | Now, I got a java.lang.StackOverflowError when I use the Non transition (Non default one). It looks like as if it was looping on the instruction : node.leave(executionContext, "Non"); Any idea ? Am I using the correct instruction ? I'm lost with all this method that seems to be able to change a transition. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4081956#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...