PL/SQL SELECT into hash array

DECLARE
    TYPE HASH_TYPE IS TABLE OF NUMBER INDEX BY VARCHAR2(20);
    mno_array HASH_TYPE;
    mno_id VARCHAR2(20);
BEGIN
    FOR r IN (SELECT DT_PARTY.HOST_MNO_ID FROM RESOURCE_DB.HT_SIM_PARTY, RESOURCE_DB.DT_PARTY
              WHERE HT_SIM_PARTY.PARTY_ID = DT_PARTY.PARTY_ID
              AND HT_SIM_PARTY.SIM_ID = 'SIM_0000000000000184') LOOP
        MNO_ARRAY(R.HOST_MNO_ID) := 1;
    END LOOP;

    IF mno_array.EXISTS('BT') THEN
        DBMS_OUTPUT.PUT_LINE('BT=YES');
    END IF;
END;