Mine

BEGIN

   select decode(p_buck_line_typ,
                'DISPUTE_ONLY',decode(nvl(p_amt_in_disp,0),0,0,1),
                'PENDADJ_ONLY',decode(nvl(p_amt_adj_pen,0),0,0,1),
                'DISPUTE_PENDADJ',decode(nvl(p_amt_in_disp,0),
                        0,decode(nvl(p_amt_adj_pen,0),0,0,1),
                        1),
                decode( greatest(p_days_from,
                                ceil(p_as_of-p_due_date)),
                        least(p_days_to,
                                ceil(p_as_of-p_due_date)),1,
                        0)
                * decode(nvl(p_amt_in_disp,0), 0, 1,
                        decode(p_bucket_category,
                                'DISPUTE_ONLY', 0, 'DISPUTE_PENDADJ', 0,
                                1))
                * decode(nvl(p_amt_adj_pen,0), 0, 1,
                        decode(p_bucket_category,
                                'PENDADJ_ONLY', 0, 'DISPUTE_PENDADJ', 0,
                                1)))
   into bucket_amount
   from dual;

   return(bucket_amount);

END;