Restrictions of channel arg of pg_notofy

Hi everyone!

Can the channel argument derived from the NEW pseudo arg of an INSERT TRIGGER?
In the following trigger function, the
PERFORM pg_notify(fac);
does not work (LISTEN in psql shows no notification).

Any help welcome.
Thanks, Axel

CREATE TRIGGER new_event_trigger AFTER INSERT OR UPDATE ON syslog.event
FOR EACH ROW EXECUTE PROCEDURE syslog.new_event_action();

CREATE OR REPLACE FUNCTION syslog.new_event_action() RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
fac TEXT := format('f0%s', NEW.facility);
BEGIN
IF NEW.facility > 9 THEN
fac := format('f%s', NEW.facility);
END IF;
IF NEW.facility = 8 THEN
INSERT INTO pf_event (id) VALUES (NEW.id);
END IF;
PERFORM pg_notify(fac);
RETURN NEW;
END;
$$;

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PGP-Key:29E99DD6 ☀ computing @ chaos claudius