Table values not getting displayed

Hi all,

I've created serach help for the input parameter and in internal table the values are getting. But when i pass the same internal table to function module and press a search help the values are not getting displayed.

  types: begin of zst,
       lang(2) type c,
       title(30) type c,
       title_medi(30) type c,
       end of zst.

data: lt_zst type table of zst,
      wa type zst.

parameters: cube(30) type c.

at selection-screen on value-request for cube.

select   langu title title_medi from TSAD3T into table lt_zst where langu = sy-langu.

IF sy-subrc eq '0'.

  sort lt_zst by title.

ENDIF.

CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
*   DDIC_STRUCTURE         = ''
      RETFIELD               = 'title'
*   PVALKEY                = ' '
*    DYNPPROG               = sy-repid
*    DYNPNR                 = sy-dynnr
*   DYNPROFIELD            = ''
*   STEPL                  = 0
*      WINDOW_TITLE           = ''
*   VALUE                  = ' '
      VALUE_ORG              = 'S'
*    MULTIPLE_CHOICE        = 'X'  "allows you select multiple entries from the popup
*   DISPLAY                = ' '
*   CALLBACK_PROGRAM       = ' '
*   CALLBACK_FORM          = ' '
*   MARK_TAB               =
* IMPORTING
*   USER_RESET             = ld_ret
    TABLES
      VALUE_TAB              =  lt_zst
*    FIELD_TAB              = lt_field
*      RETURN_TAB             = it_return
*   DYNPFLD_MAPPING        =
   EXCEPTIONS
     PARAMETER_ERROR        = 1
     NO_VALUES_FOUND        = 2
     OTHERS                 = 3.