GUI_FILE_SAVE_DIALOG 

 

CALL METHOD CL_GUI_FRONTEND_SERVICES=>DIRECTORY_BROWSE
        EXPORTING
          WINDOW_TITLE         = 'Pelease select the download directory'
          INITIAL_FOLDER       = 'C:\Users\*****\'
        CHANGING
          SELECTED_FOLDER      = gv_bfile
       EXCEPTIONS
         CNTL_ERROR           = 1
         ERROR_NO_GUI         = 2
         NOT_SUPPORTED_BY_GUI = 3
         others               = 4.