how to create store procedure with parameters in package on pl sql

CREATE OR REPLACE PACKAGE synchronize_my_data
AS
PROCEDURE synchronize_data(p_run_date IN number);
END synchronize_my_data;
CREATE OR REPLACE PACKAGE BODY synchronize_my_data
IS
PROCEDURE synchronize_data(p_run_date IN number)
IS
BEGIN
dbms_output.put_line('Output from PL/SQL...');
END synchronize_data;

END synchronize_my_data;
exec synchronize_my_data.synchronize_data(p_run_date => 1)