BULK COLLECT in a trigger - sql

Question

I need to create a trigger that updates a column in a table based on a transaction that happens in another table. Is there a way to use BULK COLLECT on joining two tables?
I need to collect data multiple times, is it possible to use BULK COLLECT inside another BULK COLLECT?
HERE is my existing trigger
create or replace trigger trans_hist_trg
AFTER INSERT OR UPDATE OF reason ON transaction_history
FOR EACH ROW
DECLARE
v_exists VARCHAR2(1);
v_valid code.valid_code%TYPE;
v_person_id person.id%TYPE;
TYPE Anumber_Type is TABLE of person.registration_number%TYPE INDEX BY binary_INTEGER;
v_NumberList Anumber_Type;
v_primaryAnumber person.primary_number%TYPE;
v_secondaryAnumber consolidated_numbers.secondary_number%TYPE;
v_anumber person.registration_number%TYPE;
BEGIN
IF(INSERTING) THEN
v_person_id := :NEW.person_id;
ELSE
v_person_id := :OLD.person_id;
END IF;
BEGIN
SELECT p.registration_number, p.primary_number, c.secondary_number INTO v_anumber, v_primaryAnumber, v_secondaryAnumber
FROM person p
LEFT JOIN consolidated_numbers c ON p.id = c.person_id WHERE p.id = v_person_id;
END;
BEGIN
SELECT women_act INTO v_exists
FROM person
WHERE id = v_person_id;
EXCEPTION
WHEN NO_DATA_FOUND THEN
v_exists := NULL;
END;
IF v_exists IS NULL AND :NEW.type_id IN (10,20,30,40,50) THEN
IF :NEW.reason NOT IN ('A1','B1') OR (:NEW.reason IN ('A1','B1') AND :NEW.action_date >= '01-JAN-00') THEN
BEGIN
SELECT valid_code INTO v_valid
FROM code
WHERE valid_code = :NEW.reason;
EXCEPTION
WHEN NO_DATA_FOUND THEN
v_exists := null;
END;
IF v_valid IS NOT NULL THEN
SELECT CASE
WHEN EXISTS (SELECT 1 FROM code WHERE valid_code = v_valid)
THEN 'Y' ELSE 'N' END INTO v_exists FROM dual;
END IF;
IF v_exists = 'Y' THEN
select registration_number BULK COLLECT into v_NumberList
FROM person where (registration_number=v_primaryAnumber OR
registration_number=v_anumber OR
registration_number=v_secondaryAnumber OR
primary_number= v_secondaryAnumber OR
primary_number=v_anumber OR
primary_number=v_primaryAnumber ) and (primary_number IS NOT NULL or primary_number <>'000000');
ELSE
select registration_number BULK COLLECT into v_NumberList
FROM person where (registration_number=v_primaryAnumber OR
registration_number=v_anumber OR
registration_number=v_secondaryAnumber OR
primary_number=v_anumber OR
primary_number=v_secondaryAnumber OR
primary_number=v_primaryAnumber OR
primary_number IS NULL);
END IF;
FOR indx IN 1 .. v_NumberList.COUNT
LOOP
update person set women_act = 'X'
where registration_number=v_NumberList(indx) and (women_act<>'X' or women_act IS NULL);
END LOOP;
update person set women_act = 'X'
where registration_number=v_anumber and (women_act<>'X' or women_act IS NULL);
END IF;
END IF;
mmm
END trans_hist_trg;
I need to make this block of code to be my main outer loop to iterate through all the numbers. But I'm unsure how. Please help.
SELECT p.registration_number, p.primary_number, c.secondary_number INTO v_anumber, v_primaryAnumber, v_secondaryAnumber
FROM person p
LEFT JOIN consolidated_numbers c ON p.id = c.person_id WHERE p.id = v_person_id;
Thank you!