Create Txt file in Apllication server with spaces

Hi All,

I need to write a text file in application server with 'SPACE' like below. (ECC 6.0 , EHP : 0 , OS version : OS400 )

DATA :  lv_one(1) TYPE c,                   

         lv_two(4) TYPE c,

         lv_spaceval(779) TYPE c.

          lv_file_name TYPE string,

          lv_raw TYPE string,

          lv_space TYPE string.

          lv_one = '5'.

          lv_two = 'SAJ1'.

          lv_spaceval = ' '.                    " I need to create 779 spaces from this variable in the text file

CONCATENATE '/usr/sap/MyFile_' sy-datum '.txt' INTO lv_file_name.

OPEN DATASET lv_file_name FOR OUTPUT IN TEXT MODE ENCODING DEFAULT WITH SMART LINEFEED.

lv_space = cl_abap_conv_in_ce=>uccp( '00a0' ).

WRITE  lv_space TO lv_reserved+778(1).                    " this is the place Im trying to create Spaces

CONCATENATE lv_one lv_two lv_spacevalINTO lv_raw .

TRANSFER: lv_raw TO lv_file_name.

SET DATASET lv_file_name POSITION END OF FILE.

CLOSE DATASET lv_file_name.

I dont see any SPACES ( there should be '779' spaces ) in the text file.

If I write the statement ;

" WRITE  lv_space TO lv_reserved+249(1)  " , I can see there are 250 spaces in the text file .Maximum characters that text file contain is 255 (with or without SPACES ). cannot write exceeding that.

How can I increase this characters?