[rules-users] drools global variable problem

Hi , I am facing problem in drools global variable. Setting one global variable using kSession.setGlobal("timeTo", new Date().getTime()); global java.lang.Long timeTo; rule myrule when $m : Medicine(expiryDate < (timeTo - 60000)) then retract($m) end It is not doing as expected, means retracting all medicines form drools memory. Thanks, Saurabh