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i have 2 fields on selection screen of a Report along with
a check box.My requirement is initially that first field
sud be mandatory but when we click on the check box the
first field which was mandatory sud now be optional and the
second field now sud be mandatory.Please provide the
solution asap. thank u.

Question Posted / madan

Answer Posted / madan

REPORT ztest2.
TABLES t001w.

SELECTION-SCREEN BEGIN OF BLOCK b1.
SELECT-OPTIONS s_werks FOR t001w-werks OBLIGATORY.
SELECT-OPTIONS s_land FOR t001w-land1.

SELECTION-SCREEN BEGIN OF BLOCK b2.
PARAMETERS chk AS CHECKBOX USER-COMMAND click.
SELECTION-SCREEN END OF BLOCK b2.

SELECTION-SCREEN END OF BLOCK b1.

AT SELECTION-SCREEN.
* This event is then triggered when a user selects an
option from CHECKBOX
IF chk = ''.
LOOP AT SCREEN.
IF screen-name = 'S_WERKS-LOW'.
screen-required = '1'.
MODIFY SCREEN. " INDEX sy-tabix.
ELSEIF screen-name = 'S_LAND-LOW'.
screen-required = ''.
MODIFY SCREEN. " INDEX sy-tabix.
ENDIF.
ENDLOOP.
ELSEIF chk = 'X'.
LOOP AT SCREEN.
IF screen-name = 'S_WERKS-LOW'.
screen-required = ''.
MODIFY SCREEN. " INDEX sy-tabix.
ELSEIF screen-name = 'S_LAND-LOW'.
screen-required = '1'.
MODIFY SCREEN. " INDEX sy-tabix.
ENDIF.
ENDLOOP.
ENDIF.


AT SELECTION-SCREEN OUTPUT.
* This event is also trigged to re-draw ABAP report screen
so can be
* used to hide or display fields

IF chk = ''.
LOOP AT SCREEN.
IF screen-name = 'S_WERKS-LOW'.
screen-required = '1'.
MODIFY SCREEN. " INDEX sy-tabix.
ELSEIF screen-name = 'S_LAND-LOW'.
screen-required = ''.
MODIFY SCREEN. " INDEX sy-tabix.
ENDIF.
ENDLOOP.
ELSEIF chk = 'X'.
LOOP AT SCREEN.
IF screen-name = 'S_WERKS-LOW'.
screen-required = ''.
MODIFY SCREEN. " INDEX sy-tabix.
ELSEIF screen-name = 'S_LAND-LOW'.
screen-required = '1'.
MODIFY SCREEN. " INDEX sy-tabix.
ENDIF.
ENDLOOP.
ENDIF.

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