problem with stored procedure

create or replace procedure addMovieTask(
a_movieID as number,
a_movieTaskDesc clob,
a_movieTaskStatus varchar2,
a_started date,
a_finished date,
a_due date
)
IS
   v_movieTaskID number;
BEGIN
   select sysdate from dual;

   --get amt of movies in table
   select count(*)
   into v_movieTaskID
   from movietasks;

   --increment to get a unique ID
   V_movieTaskID := V_movieTaskID + 1;

   --insert new movie
   insert into movietasks
   values(v_movieTaskID,a_movieID,
          a_movieTaskDesc,
          a_movieTaskStatus,a_started,
          a_finished,a_due);

   commit;
END addMovieTask;