FB 2.5

I need to insert data with a script. but get an error

Invalid token.
Dynamic SQL Error.
SQL error code = -104.
Token unknown - line 2, column 1.
INSERT.


the script itself is like below- any ideas what is wrong?

INSERT INTO CAR_MARK ("car_mark_id", "car_mark_name") VALUES (1, 'test ');
INSERT INTO CAR_MARK ("car_mark_id", "car_mark_name") VALUES (2, 'test
two');
INSERT INTO CAR_MARK ("car_mark_id", "car_mark_name") VALUES (3, 'test
three');