[rules-dev] globals

Hello, My problem is to use a global variable in some rules: global PhysicalPerson assignee rule "get_the_assignee" no-loop salience 100 when exists PhysicalPerson() beneficiary : PhysicalPerson() eval(true) then assignee = new PhysicalPerson(); assignee.setId(new Long(007)); Tools2.traceSomething(assignee.getId()); Tools2.traceSomething("get_the_assignee"); end rule "check_the_assignee" no-loop salience 50 when exists PhysicalPerson() eval(true) then Tools2.traceSomething("check_the_assignee"); Tools2.traceSomething(assignee.getId()); end I don't understand why when my rule "check_the_assignee" is executed, i get a null pointer exception on Tools2.traceSomething(assignee.getId()) ? The question behind this is i want to use a created object inside a rule and use it in others rules with lower salience ... Thanks in advance.