GUI_UPLOAD

Hi,

i am uploading a file which is have 587 width, i have used declaration of string for the internal table but i am not getting complete data...here the code is below....

DATA: BEGIN OF data_all OCCURS 0,

all type string ,

END OF data_all.

IF p_fname IS INITIAL.

MESSAGE i150(pn).

EXIT.

ELSE.

MOVE p_fname TO fname.

CALL FUNCTION 'GUI_UPLOAD'

EXPORTING

filename = FNAME

tables

data_tab = data_all.

so please let me know y i am not getting complete data.....in the data_all internal table which is in the file.....