Cl_gui_frontend_services= gui_download, header and data in text file

CALL METHOD cl_gui_frontend_services=>gui_download        EXPORTING
    filename                = c:\abc.txt
    filetype                = 'ASC'
     write_field_separator = space
   HAS_FIELD_SEPARATOR     = SPACE
   HEADER_LENGTH           = 0
   DAT_MODE                = SPACE
   CODEPAGE                = 'ASC'
   IGNORE_CERR             = ABAP_TRUE
   REPLACEMENT             = '#'
   READ_BY_LINE            = 'X'
IMPORTING
   FILELENGTH              =
   HEADER                  =
CHANGING
    data_tab                = t_pch[]
here the file abc.txt get some text as header.
butwhen i want write actual data again witht he same file name the file get over writed
CALL METHOD cl_gui_frontend_services=>gui_download
EXPORTING
    filename                = c:\abc.txt
    filetype                = 'ASC'
     write_field_separator = space
   HAS_FIELD_SEPARATOR     = SPACE
   HEADER_LENGTH           = 0
   DAT_MODE                = SPACE
   CODEPAGE                = 'ASC'
   IGNORE_CERR             = ABAP_TRUE
   REPLACEMENT             = '#'
   READ_BY_LINE            = 'X'
IMPORTING
   FILELENGTH              =
   HEADER                  =
CHANGING
    data_tab                = t_pc[]

Hi
When second time you call method just add the following
CALL METHOD cl_gui_frontend_services=>gui_download
     EXPORTING
       filename                  = v_value
       append                    = 'X'        <------- Just add this line

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Edited by: user13836688 on Mar 21, 2011 4:06 AM
Edited by: user13836688 on Mar 21, 2011 4:07 AM
Edited by: user13836688 on Mar 21, 2011 4:08 AM

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SQL*Loader: Release 10.2.0.1.0 - Production on Mon May 31 09:45:10 2010
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Message was edited by:
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