Trigger Problem

hey all

I have created a function that is used in a trigger.

--------------------------------------------------
--------------------------------------------------

CREATE TRIGGER tr_insert_on_a AFTER INSERT OR UPDATE
ON A
FOR EACH ROW EXECUTE PROCEDURE fn_insert_on_a();

--------------------------------------------------
--------------------------------------------------

CREATE function fn_insert_on_a() RETURNS OPAQUE AS
'
BEGIN
INSERT INTO B name, a_ref VALUES
(NEW.name,NEW.id);
RETURN NEW;
END;

' LANGUAGE 'plpgsql';

I am getting following error.
ERROR :

Unrecognized language specified in a CREATE FUNCTION:
plpgsql. Recognized languages are sql,c,internal and
the created procedure languages.

NOTE:

I have studied in documenatation that only plpgsql
functions are written to be used in triggers.

any help in this regard.

thanks in advance.

Faisal

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