error creating sql function

I was trying to create a sql function today (see below) using
postgresql  7.3.3.  I don't see how to get around this error, anyone
have any suggestions?

Thanks much,

Matthew

tocr=# CREATE OR REPLACE FUNCTION public.update_dncl(bpchar, bpchar)
tocr-#   RETURNS void AS
tocr-# '
tocr'# begin;
tocr'# update area_codes
tocr'#   set last_updated = now()
tocr'#     where code = $1;
tocr'# DELETE from do_not_call_list
tocr'#   where area_code = $1;
tocr'# copy do_not_call_list (area_code, number) from $2 with delimiter
as \',\';
tocr'# commit;
tocr'# '
tocr-#   LANGUAGE 'sql' VOLATILE;
ERROR:  parser: parse error at or near "$2" at character 178
tocr=# COMMENT ON FUNCTION public.update_dncl(bpchar, bpchar) IS 'Will
be used to update an area code in the  DNCL tables.';
COMMENT



tocr=# SELECT version();

version
---------------------------------------------------------------------------------------------------------
 PostgreSQL 7.3.3 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2
20020903 (Red Hat Linux 8.0 3.2-7)
(1 row)