Addition of Trailing space resulting in zeros

Question

I am adding trailing space to MATNR after removing the leading zeros. I am adding hex value of space 0x20, however instead of spaces , zeroes are being added to the end of the field. What could be the reason? Is there any other method of adding trailing space.
My Code
loop at i_output.
    CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
      EXPORTING
        INPUT  = i_output-matnr
      IMPORTING
        OUTPUT = i_OUTPUT-matnr.
    l_pos = strlen( i_OUTPUT-matnr ).
    numtimes = 15 - l_pos.
    do numtimes times. " add trailing spaces
      i_output-matnr+l_pos(1) = c_space.
      l_pos = l_pos + 1.
    enddo.

Answer 1

Here you go...
loop at i_output.
concatenate i_output-matnr
               i_output-werks
               i_recty
               runweek
               cmenge "i_output-menge
               i_output-qsign
               i_output-numdocs into out_rec.
    istrlen = strlen( out_rec ).
    transfer out_rec to ofilepath length istrlen.
    clear out_rec.
  endloop.
I am using ECC5.0
Edited by: sanjane on Feb 25, 2010 8:51 AM