How to remove the hexadecimal error in ECC 6.0

REPORT Z_KA51151_TEST.

DATA: BEGIN OF gt_temse OCCURS 0,

line(100),

END OF gt_temse.

DATA: chr TYPE x VALUE '0A',

x_string(255) TYPE X,

last_chars(128),

blank(128) VALUE space.

LOOP AT gt_temse.

WRITE gt_temse TO x_string.

ENDLOOP.

The Error i/m getting is X_STRING must be a charectar type field (data type C,N,D or T)

my question is what is alternate to code the logic to have the same finctionality ?