BDC 코딩을 짜는 중인데요

it_list2에서 변경된 줄을 선택해서 BDC 아이콘을 누르면 변경된 값이 mara에 들어가서 저장되는 코딩을 짜고 있는중인데

문제점이

1. 값을 변경한 뒤 BDC코드를 누르면 일단 변경은 되는데 다시 앞의 화면으로 갔다가 들어오면 변경된값이 반영이 안되구요

2. 위에서 변경된 값을 Create 화면에 보여주려고 하는데 create 화면에 있는 모든 값들이 같은값( 위에서 변경해준값)으로 바뀌네요

도대체 무슨문제 인지 모르겠어요 ㅠㅠ 빠른 답변 부탁드립니다 ㅠ

  DATA : l_data(8).

  DATA : gs_stable2 TYPE lvc_s_stbl.
  CLEAR : lt_tab2, lt_tab2[], lt_rows2, lt_rows2[].

  CALL METHOD g_grid->check_changed_data  "==> 이것을 써야 선택된 데이터만 가져옴
        IMPORTING
          e_valid = ls_flag_change.
  CHECK ls_flag_change = 'X'.



  REFRESH: lt_rows2.
  CALL METHOD g_grid->get_selected_rows
    IMPORTING
      et_index_rows = lt_rows2.
  CALL METHOD cl_gui_cfw=>flush.
  CLEAR : lt_cnt2.
  DESCRIBE TABLE lt_rows2 LINES lt_cnt2.

  IF lt_rows2[] IS INITIAL.
    MESSAGE e001 WITH '라인을 선택하세요'.
  ELSEIF lt_cnt2 > 1.
    MESSAGE e001 WITH '라인은 하나만 선택 가능합니다.'.
  ENDIF.

    CLEAR : it_bdcdata, it_bdcdata[],it_messtab,it_messtab[].

 LOOP AT lt_rows2 INTO ls_rows2.

    READ TABLE it_list2 INDEX ls_rows2-index.
   " MOVE-CORRESPONDING it_list2 TO lt_tab2.

    PERFORM bdc_dynpro USING 'SAPLMGMM' '0060'.
    PERFORM bdc_field USING 'BDC_OKCODE'
                             '=ENTR'.
    PERFORM bdc_field USING 'RMMG1-MATNR'
                             it_list2-matnr.

    PERFORM bdc_dynpro USING 'SAPLMGMM' '0070'.
    PERFORM bdc_field USING 'BDC_OKCODE'
                             '=SELA'.

    PERFORM bdc_dynpro USING 'SAPLMGMM' '0070'.
    PERFORM bdc_field USING 'BDC_OKCODE'
                             '=ENTR'.

    PERFORM bdc_dynpro USING 'SAPLMGMM' '0080'.
    PERFORM bdc_field USING 'BDC_OKCODE'
                             '=ENTR'.

    PERFORM bdc_field USING 'RMMG1-WERKS'
                             it_list2-werks.

    PERFORM bdc_field USING 'RMMG1-LGORT'
                         it_list2-lgort.

    WRITE it_list2-brgew TO l_data " --> 인터널 테이블의 값을 L_DATA로 옮겨줌.
               UNIT it_list2-gewei LEFT-JUSTIFIED.



    PERFORM bdc_dynpro USING 'SAPLMGMM' '4004'.
    PERFORM bdc_field USING 'BDC_OKCODE'
                             '=SP12'.
    PERFORM bdc_field USING 'MARA-BRGEW'
                             l_data.

    PERFORM bdc_field USING 'MARA-NTGEW'
                            l_data.
    PERFORM bdc_dynpro USING 'SAPLMGMM' '4000'.
    PERFORM bdc_field USING 'BDC_OKCODE'
                             '=BU'.
    PERFORM bdc_field USING 'MARC-DISMM'
                             it_list2-dismm.



    CALL TRANSACTION 'MM02' USING it_bdcdata
                            MODE w_mode
                            UPDATE 'S'.

    PERFORM get_bcd_msg CHANGING g_msglin. "--> 그 안에서 바뀜

    it_list2-zmesg = g_msglin.


    MOVE-CORRESPONDING it_list2 TO lt_tab2.


*    APPEND it_list2.
*    UPDATE zmmtest set brgew = it_list2-brgew.
**                       dismm = it_list2-dismm.
*MODIFY it_list2 INDEX ls_rows2-index.

    CLEAR : ls_rows2-index.







  ENDLOOP.