PL/SQL Function Help

The following function worked in 8i(8.1.7.4) but will not compile in 9i(9.2.0.3). This is a stripped down version with just the error parts. I am really new at PL/SQL can someone help me out.

Thanks
Larry

CREATE OR REPLACE FUNCTION did_close_test( v2_msg_io IN OUT VARCHAR2, rt_pa_i IN s2_person_action%ROWTYPE )
RETURN PLS_INTEGER IS

B_TRUE BOOLEAN := TRUE; 
b_moa_ok BOOLEAN := FALSE; 
n_rc PLS_INTEGER := 0; 

CURSOR c_mon IS
SELECT B_TRUE
FROM s2_action_monitor
WHERE moa_received_date IS NOT NULL
AND moa_signed_date IS NOT NULL
AND person_action_key = rt_pa_i.process_person_action_key;

BEGIN OPEN c_mon;
FETCH c_mon INTO b_moa_ok;
CLOSE c_mon;

RETURN n_rc;

END did_close_test;
/ Received on Tue Aug 19 2003 - 15:03:47 CEST