to_char problem

I get compile error for this code:


for i in 1..arg_count-1  LOOP
RAISE NOTICE quote_literal(to_char(i, ''9''));
END LOOP;

where arg_count = 3.

I tried RAISE NOTICE to_char(i, ''9''); as well.
to_char returns text, right? Then what did I do wrong here?


Wei