How to execute a procedure?

Hi,

i want to execute below procedure ..

create or replace

PROCEDURE distr_booking_performance

(p_sls_code IN bks_sales_str.sls_code%TYPE,

  p_period IN bookings_activity_actual.period%TYPE,

  p_rpt_type varchar default 'S',

  p_cursor IN OUT booking_performance_pkg.book_perf_type)  (Note # booking_performance_pkg.book_perf_type  -->it is a ref cursor type)

---

some code

---

END distr_booking_performance;

Is it any thing wrong here executing this ?

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declare

v booking_performance_pkg.book_perf_type;

begin

distr_booking_performance('xx','yy',v)

end;

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Thanks,