Use 3 internal table in GUI_Download

Hello expert,

i have 3 internal table: gt_header, gt_body and gt_footer. how can i used all 3 in gui_download fm. here is my sample code:

  CALL FUNCTION 'GUI_DOWNLOAD'

    EXPORTING

      filename              = gv_file_name

      filetype              = 'ASC'


    TABLES

      data_tab              = gt_header.

here i can only pass one internal table.

Help please?