Why do I get a " token unknown - line 4 char 4 SET error on the following code?

COMMIT WORK;
SET AUTODDL OFF;
SET TERM ^ ;

/* Stored procedures */

ALTER PROCEDURE "CLEANMESSAGES"
AS
BEGIN
SET GENERATOR GEN_MSGS TO 0;
SET GENERATOR GEN_MSGIMPORTS TO 0;
SET GENERATOR GEN_TXNERROR TO 0;

DELETE FROM MESSAGES;
DELETE FROM TXNERROR;
DELETE FROM MESSAGEIMPORTS;
END
^

SET TERM ; ^
COMMIT WORK;
SET AUTODDL ON;


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