[rules-users] Killing a session

Hi there, Is there any way to kill a running session? I've been trying with StatefulKnowledgeSession.abortProcessInstance but i can't get it working. For instance .. I got this drl rule "infinite loop" when x : Integer() then System.out.println(x); Thread.sleep(100); insert(x + 1); end n' this Thread public class SessionThread implements Runnable { private StatefulKnowledgeSession session; public SessionThread(StatefulKnowledgeSession session) { this.session = session; } public void run() { session.fireAllRules(); } } then i create a session with the drl n' do something like ... session.insert(42); Thread thread = new Thread(new SessionThread(session)); thread.start(); Thread.sleep(1000); session.abortProcessInstance(thread.getId()); I've tried diff processInstanceIds and session.getProcessInstances() but nothing seems to stop the running session Thank you Mike