dbms_pipe issues

i'm trying to use dbms_pipe to pipe data from one procedure to another.  the procedures are as follows.  i'm using dbms_job to start the ben_test_proc2 procedure (code also below).  it will sit in a loop for a specified period of time looking down the pipe.  i call ben_test_proc to submit some values to the pipe.  for some reason i'm not getting any values inserted into my table from ben_test_proc2.  any ideas what i'm doing wrong here?  thx.

--begin ben_test_proc
CREATE OR REPLACE PROCEDURE Ben_Test_Proc
IS
   s          INTEGER;
   p_id NUMBER := 1;
   p_first NUMBER := 1;
   p_last NUMBER := 1;
   p_flag VARCHAR2(10) := 'test' ;
BEGIN
s:=sys.dbms_pipe.create_pipe('eims_assoc_trigger_pipe',8192,FALSE);
   SYS.DBMS_PIPE.pack_message (p_id);
   SYS.DBMS_PIPE.pack_message (p_first);
   SYS.DBMS_PIPE.pack_message (p_last);
   SYS.DBMS_PIPE.pack_message (p_flag);
   s := SYS.DBMS_PIPE.send_message ('eims_assoc_trigger_pipe');
   dbms_output.put_line(s);
END Ben_Test_Proc;
/

--------end ben_test_proc

-------begin ben_test_proc2
CREATE OR REPLACE PROCEDURE Ben_Test_Proc2
IS
   n              NUMBER;
   ID             NUMBER;
   FIRST          VARCHAR2 (50);
   LAST           VARCHAR2 (50);
   flag           CHAR (1);
   record_count   NUMBER;
BEGIN
   WHILE TO_DATE ('07-Sep-2005 14:20:00', 'DD-Mon-YYYY HH24:MI:SS') > SYSDATE
   LOOP
      n := DBMS_PIPE.receive_message ('eims_assoc_trigger_pipe');
      DBMS_PIPE.unpack_message (ID);
      DBMS_PIPE.unpack_message (FIRST);
      DBMS_PIPE.unpack_message (LAST);
      DBMS_PIPE.unpack_message (flag);

      SELECT COUNT (*)
        INTO record_count
        FROM BEN_TEST;

      INSERT INTO BEN_TEST_AFTER
           VALUES (ID, FIRST, LAST, SYSDATE, flag, record_count);

      COMMIT;
   END LOOP;
   n := sys.dbms_pipe.remove_pipe('eims_assoc_trigger_pipe');
END Ben_Test_Proc2;
/

---end ben_test_proc2

--start dbms_job
DECLARE
jobno NUMBER;
BEGIN
sys.dbms_job.submit(jobno, 'ben_test_proc2;');
END;