Data disappears on enter in table control

Hi All,

i am working in module pool, now i gets a problem at one point.

When i fills my data in table control in module pool and presses

enter, it disappears. i have searched various threads on scn

but still not able to solve my problem, here is my code

please sujjest me the solution.

PROCESS BEFORE OUTPUT.
MODULE DISPLAY.
MODULE SELECT_RECORDS.
*&SPWIZARD: PBO FLOW LOGIC FOR TABLECONTROL 'TBC_ESC'
   MODULE TBC_ESC_CHANGE_TC_ATTR.
*&SPWIZARD: MODULE TBC_ESC_CHANGE_COL_ATTR.
   LOOP AT   IT_FINAL
        INTO WA_FINAL
        WITH CONTROL TBC_ESC
        CURSOR TBC_ESC-CURRENT_LINE.
     MODULE TBC_ESC_GET_LINES.
*&SPWIZARD:   MODULE TBC_ESC_CHANGE_FIELD_ATTR
   ENDLOOP.

  MODULE STATUS_9000.

PROCESS AFTER INPUT.

CHAIN.
MODULE EXIT.

ENDCHAIN.


*&SPWIZARD: PAI FLOW LOGIC FOR TABLECONTROL 'TBC_ESC'
   LOOP AT IT_FINAL.
     CHAIN.
       FIELD WA_FINAL-DES.
       FIELD WA_FINAL-MATERIAL.
       FIELD WA_FINAL-CODE.
      
       MODULE TBC_ESC_MODIFY ON CHAIN-REQUEST.
     endchain.
     FIELD WA_FINAL-WERKS
*      MODULE TBC_ESC_MODIFY ON CHAIN-REQUEST.
       MODULE TBC_ESC_MARK ON REQUEST.
   ENDLOOP.
   MODULE TBC_ESC_USER_COMMAND.
*&SPWIZARD: MODULE TBC_ESC_CHANGE_TC_ATTR.
*&SPWIZARD: MODULE TBC_ESC_CHANGE_COL_ATTR.

  MODULE USER_COMMAND_9000.