[rules-users] rules getting fired in an infiniteloop even when noloop is set to true

i have my rule as rule AssignSomething no-loop true when $ao:AssertionObject() $ssc:String() from getSSC(getRecordData($ao,"stationNo")) eval(!($ssc==null)) then modify($ao){setBillingRecord("posId",$ssc);} info(BillingRecordHelper.SSCPOC_ASSIGNED_INFO,log); end Here i am setting values for the assertionobject in my rhs. But this value is different from the ssc value i am checking in the rule condition. But still this goes into an infinite loop. what am i doing wrong? thanks Abarna