Update/Change Component reqmt quantity using BAPI_ALM_ORDER_MAINTIAN

Hi All,

   Im using BAPI_ALM_ORDER_MAINTAIN to change component Quantity.

Below mentioed are the fields that im passing thru component table,Method tab and operation tab....

Method tab.  (To change 0001 rspos  reservation)

000001   HEADER                  CHANGE   000000XXXXXX

000001   COMPONENT         CHANGE   000000XXXXXX0001

000001                                      SAVE          000000XXXXXX

Component tab.

RESRV_NO :  XXXXX

RES_ITEM   :  0001

MATERIAL    :  XXXXX

STRG LOC  :   XXXX

ITEM NUM   :   0010

REQ QTY     :   XX

REQ QTY UNIT : XXX

Component_up tab.

im passing 'X'  for all the above mentioned fields in comp tab.

Operation tab.

Operation related data.

Every thing is going good. Even BAPI doesnot give any error.

And even used   BAPI_TRANSACTION_COMMIT after successful process of BAPI....

But quantity field is not getting updated in IW32.

Can somebody plz help me out of this....:(

Thanks,

Prasanna