Uninitialized collection error

Question

All,
I got the error ORA-06531: Reference to uninitialized collection. I cannot see any worong in my code(posted below). Could some one please tell me what wrong in my code?
Thanks In advance!!
CREATE OR REPLACE
Type T_PREO_Access_ProfileTest is Object
BUREAU_ID NUMBER(10),
AB_CODE VARCHAR2(4),
BUREAU_NAME VARCHAR2(20));
CREATE OR REPLACE
TYPE T_ProfileInfoTest IS TABLE OF PREORDER.T_PREO_Access_profiletest;
Procedure P_GetAccessProfileTest(userid in number, selectBureau out T_ProfileInfoTest, status out number)
as
profile_info T_ProfileInfo;
Bureau_info T_ProfileInfoTest; V_BUREAU_ID      PREO_BUREAU.BUREAU_ID%type;
V_AGENCY_ID PREO_BUREAU.AGENCY_ID%type;
BEGIN
     select T_PREO_Access_ProfileTest(BUREAU_ID, AB_CODE, BUREAU_NAME)
     BULK COLLECT INTO Bureau_info
     from preo_bureau
     where AGENCY_ID in (select AGENCY_ID from preo_access_profile where ID =                     userid and id_type = 'U')
     and BUREAU_ID not in (select BUREAU_ID from preo_access_profile where ID =                     userid and id_type = 'U');
     Bureau_info := selectBureau;     
     status := 0;
     EXCEPTION
WHEN OTHERS THEN
               Status := -1;
END;
SQL> DECLARE
2 V_Bureau T_ProfileInfoTest; 3 Status smallint;
4 BEGIN
5
6 preo_security.P_GetAccessProfileTest(42, V_Bureau, Status);
7 dbms_output.put_line('GetProfile '||Status);
8
9 For i in V_Bureau.FIRST..V_Bureau.LAST loop
10
11 dbms_output.put_line('******************************* ');
12 dbms_output.put_line('BUREAU_code '||V_Bureau(i).AB_CODE);
13 dbms_output.put_line('BUREAU_name '||V_Bureau(i).BUREAU_name);
14 end loop;
15
16
17 END;
18 /
DECLARE
ERROR at line 1:
ORA-06531: Reference to uninitialized collectionORA-06512: at line 9

Answer 1

The following line
Bureau_info := selectBureau;
should be
selectBureau := Bureau_info;
There may also be other errors.