UNICODE Problem when Download/Upload from ASC file.

Question

Due to the Unicode system takes each Chinese character as a byte, the field(10) can take 10 Chinese Characters, not like before only 5 characters allowed.
The problem is when the data is downloaded to a txt file, the field ,length 10, contained Characters, is displayed 10 Chinese characters(that's 20 bytes in txt file). It causes the displayed field length are changed.
ex.
text = '12@@@@@00012345'.
text = text+0(12) --> display '12@@@@@' the output I actually want.
text = text+0(12) --> display '12@@@@@00012' Unicode makes this in txt file,
the Chinese characters cannot display properly, so just assume each '@' as a Chinese character.
How to make system take the Chinese characters as 2 bytes when download....or any other better idea for this?
anyone who can solve this, thanks in advance.

Answer 1

Hi Prashant and Uwe,
Thanks for your help. I used 'GUI_UPLOAD', but it still doesn't work.
'Text1' still equal to '12@@@@@00012' , not '12@@@@@'
My test problem as below:
data: l_file type string.
        text1(20) type c.
DATA: BEGIN OF T_FICH OCCURS 0,
         LIGNE(5000),
      END OF T_FICH.
  l_file = P_SOURCE.
  CALL FUNCTION 'GUI_UPLOAD'
       EXPORTING
            FILENAME            = l_file
           FILETYPE            = 'ASC'
           HAS_FIELD_SEPARATOR = 'X'
           Read_By_Line        = 'X'
            CODEPAGE            = '8400'
       TABLES
            DATA_TAB            = T_FICH
       EXCEPTIONS
            OTHERS              = 99.
LOOP AT T_FICH.
   text1 = T_FICH-LIGNE+0(12).
ENDLOOP.
Could you give me some advise about this?