Convert to SP !!!

Hi,
How to convert the following update statment as stored procedure thru Oracle SQL Developer :-

UPDATE TESTDTA.F4311
SET PDCNID =    (SELECT A.PDCNID FROM TESTDTA.F564311 A
                                WHERE A.PDDOCO = '330001'
                                AND A.PDDCTO = 'O3'
                                AND A.PDLNID = 1000)
WHERE TESTDTA.F4311.PDDOCO = '330001'
AND TESTDTA.F4311.PDDCTO = 'O3'
AND TESTDTA.F4311.PDLNID = 1000;

Thanks in advance.

Regards,
RAM