How to catch the select-options value in AT SELECTION-SCREEN event?

Hi,all
This is my code:
SELECT-OPTIONS: P_BUKRS FOR T012-BUKRS.
PARAMETERS: P_BNKA TYPE BANKA.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR P_BNKA.
select single bankl from bnka where bukrs = p_bukrs.
Last statement failed because p_bukrs was null.
So, How can I got the value of p_bukrs in AT SELECTION-SCREEN event?

Hi Jie,
try following code.
REPORT zanu_test.
TABLES : t012.
PARAMETERS: p_bukrs LIKE t012-bukrs.
PARAMETERS: p_bnka TYPE banka.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_bnka.
DATA: BEGIN OF dynpfields OCCURS 0.
          INCLUDE STRUCTURE dynpread.
DATA: END OF dynpfields.
*--- IT for changing fields on the screen
DATA : t_dynp_flds LIKE dynpread OCCURS 0 WITH HEADER LINE,
         t_dynpfields LIKE dynpread OCCURS 0 WITH HEADER LINE.
DATA: l_bukrs LIKE t012-bukrs.
DATA: BEGIN OF it_bank OCCURS 0,
          banka LIKE bnka-banka,
       END OF it_bank.
DATA: l_tabix LIKE sy-tabix.
dynpfields-fieldname = 'P_BUKRS'. APPEND dynpfields.
CALL FUNCTION 'DYNP_VALUES_READ'
       EXPORTING
            dyname               = 'ZANU_TEST'
            dynumb               = sy-dynnr
       TABLES
            dynpfields           = dynpfields
       EXCEPTIONS
            invalid_abapworkarea = 1
            invalid_dynprofield = 2
            invalid_dynproname   = 3
            invalid_dynpronummer = 4
            invalid_request      = 5
            no_fielddescription = 6
            invalid_parameter    = 7
            undefind_error       = 8
            double_conversion    = 9
            stepl_not_found      = 10
            OTHERS               = 11.
IF sy-subrc EQ 0.
    READ TABLE dynpfields WITH KEY fieldname = 'P_BUKRS'.
    IF sy-subrc EQ 0.
      MOVE dynpfields-fieldvalue TO l_bukrs.
    ENDIF.
ELSE.
    EXIT.
ENDIF.
SELECT b~banka INTO CORRESPONDING FIELDS OF TABLE it_bank
FROM t012 AS a
INNER JOIN bnka AS b
ON abanks = bbanks AND abankl = bbankl
WHERE a~bukrs = l_bukrs.
CLEAR l_tabix.
CALL FUNCTION 'POPUP_WITH_TABLE_DISPLAY'
       EXPORTING
            endpos_col   = 85
            endpos_row   = 20
            startpos_col = 50
            startpos_row = 10
            titletext    = text-035
       IMPORTING
            choise       = l_tabix
       TABLES
            valuetab     = it_bank
       EXCEPTIONS
            break_off    = 1
            OTHERS       = 2.
IF sy-subrc EQ 0.
    READ TABLE it_bank INDEX l_tabix.
    IF sy-subrc EQ 0.
*--- Clear IT t_dynp_flds
      CLEAR : t_dynp_flds,
              t_dynp_flds[].
*--- Append screen values
      t_dynp_flds-fieldname = 'P_BNKA'.
      t_dynp_flds-fieldvalue = it_bank-banka.
      APPEND t_dynp_flds.
      CLEAR t_dynp_flds.
    ENDIF.
ENDIF.
*--- Change screen field contents w/o PBO
CALL FUNCTION 'DYNP_VALUES_UPDATE'
       EXPORTING
            dyname               = 'ZANU_TEST'
            dynumb               = sy-dynnr
       TABLES
            dynpfields           = t_dynp_flds
       EXCEPTIONS
            invalid_abapworkarea = 1
            invalid_dynprofield = 2
            invalid_dynproname   = 3
            invalid_dynpronummer = 4
            invalid_request      = 5
            no_fielddescription = 6
            undefind_error       = 7
            OTHERS               = 8.
START-OF-SELECTION.
-Anu

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Message was edited by:
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Message was edited by:
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How to catch the select-options value in AT SELECTION-SCREEN event?

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