create trigger in postgresql

CREATE TABLE geometries
(
  name character varying,
  geom geometry
)；
CREATE TABLE geometries1
(
  name character varying,
  geom geometry
)；
CREATE or Replace FUNCTION func_geom_insert() RETURNS trigger AS $func_geom_insert$
    BEGIN
        If (TG_OP = 'INSERT') THEN

            INSERT INTO geometries1(name,geom) values(NEW.name,NEW.geom);
        END IF;
        return null;
    END;
$func_geom_insert$ LANGUAGE plpgsql;
CREATE TRIGGER t_insert_2_table AFTER INSERT ON geometries
    FOR EACH ROW EXECUTE PROCEDURE func_geom_insert();