Updating a field using the FUNCTION 'REUSE_ALV_GRID_DISPLAY'

[Rival]

Hello,

I'm using the FUNCTION 'REUSE_ALV_GRID_DISPLAY' in my program. I want to update the field, by changing only a value, definited by the user. I do it as following:

form update_flight.

l_fieldcat-fieldname = 'CUSTOMID'.
l_fieldcat-tabname = 'ZROWS_FLT_BOOK'.
l_fieldcat-edit = 'X'.
l_fieldcat-input = 'X'.
APPEND l_fieldcat TO l_tab_fieldcat.
...
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
* I_INTERFACE_CHECK = ' '
* I_BYPASSING_BUFFER = ' '
* I_BUFFER_ACTIVE = ' '
i_callback_program = l_dis-report
i_callback_pf_status_set = 'CB_ALV_PF_SET_STATUS'
i_callback_user_command = 'CB_ALV_USER_COMMAND'
* I_CALLBACK_TOP_OF_PAGE = ' '
* I_CALLBACK_HTML_TOP_OF_PAGE = ' '
* I_CALLBACK_HTML_END_OF_LIST = ' '
i_structure_name = 'ZROWS_FLT_BOOK'
* I_BACKGROUND_ID = ' '
* I_GRID_TITLE =
* I_GRID_SETTINGS =
is_layout = l_str_layout
it_fieldcat = l_tab_fieldcat

.
.
.
LOOP AT l_tab_reservationx ASSIGNING <l_str_reservationx>.
IF <l_str_reservationx>-mark = 'X'. "it is updated
update zrows_flt_book set CUSTOMID = <L_str_reservationx>-customid "this is not updated. Why?
WHERE carrid = <l_str_reservationx>-carrid
AND connid = <l_str_reservationx>-connid
AND fldate = <l_str_reservationx>-fldate
AND bookid = <l_str_reservationx>-bookid.
ENDIF.
ENDLOOP.

if sy-subrc eq 0.
commit work.
else.
rollback work.
endif.

************************************************** ***
and in other Form

FORM cb_alv_user_command USING r_ucomm LIKE sy-ucomm
rs_selfield TYPE slis_selfield.

IF r_ucomm = 'EXECUTE'.
rs_selfield-exit = 'X'.
rs_selfield-refresh = 'X'.
ENDIF.

ENDFORM.

Thank you very much.

[Jhonny]

Hi Rival. Check this, please:
1. Check you get the value in this field <L_str_reservationx>-customid
2. Replace Update with Modify statement.

[Rival]

Hi Jhonny,

The value is the same, it doesn't change.

[Peter]

Hi Rival,

Are you trying to get the value from ALV? Then, use it to update, then you have to use interactive ALV.

Regards,
Peter

[Rival]

Hello everybody,

The program is working perfectly. It was a stupid mistake, sorry.