ممكن مساعدة في باراميتر

السلام عليكم
ممكن اعرف طريقة ارسال البارميتر؟

هذا هالفكشن الي عملته؟

CREATE OR REPLACE FUNCTION GET_OUTSTANDING( V_MONTH          NUMBER,
                                           V_YEAR           NUMBER ,
										V_OUTSTANDING NUMBER ,
										V_CONS_CODE      NUMBER,
                                           V_AREA_CODE      NUMBER) RETURN NUMBER IS

i  INTEGER :=1;
V_AMOUNT1 NUMBER :=0;
V_AMOUNT2 NUMBER :=0;

BEGIN FOR i IN 1..V_OUTSTANDING
LOOP
         SELECT  R. BAMOUNT
         INTO V_AMOUNT1 FROM READING R
         WHERE R.CONS_CODE=V_CONS_CODE AND R.RMONTH=(12-(V_MONTH-i)) AND R.RYEAR= V_YEAR AND R.AREA_CODE =V_AREA_CODE;
		 
		V_AMOUNT2 := V_AMOUNT2 + V_AMOUNT1;
 END LOOP;
 RETURN V_AMOUNT2;
 

   END GET_OUTSTANDING;

وطريقة الارسال البارميتر صحيحة او خاطئة لانه ماطلع معاي اي نتيجة؟

SELECT ROWNUM SL, C.AREA_CODE, 'P' "Consumer Type", C.TYPE_CODE, C.READER_CODE, R.CONS_CODE, C.CONS_NAME, 
 C.METERNO|| C.METERNO2 "Meter No.",R.RMONTH,R.RYEAR ,GET_OUTSTANDING(R.RMONTH,R.RYEAR ,R.CONS_CODE,R.BAMOUNT,R.AREA_CODE) "OUSTANDING MONTH" 
FROM CONSUMER C,  READING R,AREA A 
WHERE C.CONS_CODE = R.CONS_CODE AND C.AREA_CODE = R.AREA_CODE AND C.AREA_CODE = A.AREA_CODE AND C.AREA_CODE = R.AREA_CODE AND (R.RMONTH  <>NVL((SELECT P.BMONTH FROM POSTEDCOLLECTION P
                                                           WHERE P.AREA_CODE=:AREA_CODE AND P.CONS_CODE=:CONS_CODE AND P.BMONTH=:RMONTH AND P.BYEAR=:RYEAR),0) AND R.RYEAR <>NVL((SELECT P.BYEAR FROM POSTEDCOLLECTION P
                               WHERE P.AREA_CODE=:AREA_CODE AND P.CONS_CODE=:CONS_CODE AND P.BMONTH=:RMONTH AND P.BYEAR=:RYEAR),0)) AND R.RMONTH=DECODE(_RMONTH,'ALL',TO_NUMBER(substr(TO_CHAR(SYSDATE,'MM-DD-YY'),1,2)),_RMONTH) AND R.RYEAR =DECODE(_RYEAR,'ALL',TO_NUMBER(TO_CHAR(SYSDATE,'RRRR')),_RYEAR) AND C.AREA_CODE = DECODE (_AREA_CODE, 'ALL', C.AREA_CODE, _AREA_CODE) AND C.CONS_CODE = DECODE (:CONS_CODE, 'ALL', C.CONS_CODE, :CONS_CODE) AND A.REGION_CODE = DECODE (_REGION_CODE, 'ALL', A.REGION_CODE ,_REGION_CODE)