[rules-users] rules un end looping when update

Hi all, Iam using rules 5.1 iam getting un endded printout in my console. What could be the issue. Thanks in advance. #created on: Aug 16, 2010 package com.test.supplier #list any import classes here. #declare any global variables here import com.test.supplier.dao.Workflow; rule "Your First Rule" when m: Workflow(workflowActorId==null,myid:workflowActorId) then System.out.println(myid + "its null values"); update(m); end