How to Get Previous Record Value in Oracle Forms

DECLARE
   l_prev_empno   emp.empno%TYPE;
   l_prev_ename   emp.ename%TYPE;
   l_prev_job     emp.job%TYPE;
BEGIN
   IF TO_NUMBER (:SYSTEM.cursor_record) > 1
   THEN
      PREVIOUS_RECORD; /* move to the previous record and get previous record values */
      l_prev_empno := :emp.empno;
      l_prev_ename := :emp.ename;
      l_prev_job := :emp.job;
      NEXT_RECORD;    /* come back to the current record */
   END IF;
END;