Hello Ryan,
Add the below code after read_text FM.
data : lv_replace(22),
lv_replace(24).
DESCRIBE TABLE lt_lines2 LINES l_total_lines.
LOOP AT lt_lines2 INTO ls_lines2.
do l_total_lines times.
concatenate 'zgssymbsub-z_symbol_0' sy-tabix into lv_replace.
concatenate 's_zgssymbsub-z_symbol_0' sy-tabix into lv_replace1.
replace lv_replace in ls_line2 with lv_replace1.
modify it_lines2 from ls_line2 index sy-tabix.
clear : lv_replace, lv_replace1.
l_total_lines = l_total_lines - 1.
enddo.
ENDLOOP.
DESCRIBE TABLE lt_lines2 LINES l_total_lines.
Thanks