GUI_DOWNLOAD problem in 4.6c

Question

Hi Gurus
In 4.6c version i have written code like this to download data , but the column header are not prinitng . In 4.6c ver there is no fieldnames part in the FM .please suggest how to achieve and give me code if possible.my requiement like this
Customer ID        Customer name         Address <- missing info
1111              KKKKKKKKKKKKKK   RTRTRT             
The column headers GAP shuold be TAB
IF p_down = 'X'.
    CALL METHOD cl_gui_frontend_services=>file_save_dialog
      EXPORTING
        window_title         = 'Gui_Download Demo'
       with_encoding        = 'X'
        default_extension    = 'DAT'
        initial_directory    = 'C:\'
     CHANGING
        filename             = filename
        path                 = path
        fullpath             = fullpath
        user_action          = user_action
    FILE_ENCODING        = encoding
     EXCEPTIONS
        cntl_error           = 1
        error_no_gui         = 2
       not_supported_by_gui = 3
        OTHERS               = 4.
    IF sy-subrc <> 0.
      EXIT.
    ENDIF.
    IF user_action <> cl_gui_frontend_services=>action_ok.
      EXIT.
    ENDIF.
    IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    ENDIF.
    CALL FUNCTION 'GUI_DOWNLOAD'
      EXPORTING
        filename                = fullpath
        filetype                = 'ASC'
        mode                    = ' '
        filetype_no_show        = 'X'
      TABLES
        data_tab                = data_tab
        fieldnames              = chtab
      EXCEPTIONS
        file_write_error        = 1
        no_batch                = 2
        gui_refuse_filetransfer = 3
        invalid_type            = 4
        no_authority            = 5
        unknown_error           = 6
        header_not_allowed      = 7
        separator_not_allowed   = 8
        filesize_not_allowed    = 9
        header_too_long         = 10
        dp_error_create         = 11
        dp_error_send           = 12
        dp_error_write          = 13
        unknown_dp_error        = 14
        access_denied           = 15
        dp_out_of_memory        = 16
        disk_full               = 17
        dp_timeout              = 18
        file_not_found          = 19
        dataprovider_exception  = 20
        control_flush_error     = 21
        OTHERS                  = 22.
    IF sy-subrc <> 0.
      MESSAGE i998 WITH 'Error downloading file'.
    ENDIF.
Rgrds
RK

Answer 1

Hi,
i think it is because tou need to uncomment:
     FILETYPE                      = 'ASC'
try it.
Best regards.