item_templates.xml -> authorize

Hello people,

Code:

<item_template id="100001893" name="NAME" desc="1696687" name_desc="sword_v_m2_q_65a" level="65" mask="132158" category="SWORD" weapon_type="SWORD_1H" attack_type="PHYSICAL" max_stack_count="1" max_authorize="255" authorize_name="0" item_type="DEVANION" quality="MYTHIC" price="2418572" race="PC_ALL" restrict="65,65,65,65,65,65,65,65,65,65,65,65,65,65,65,65,65" bonus_apply="EQUIP" slot="3" equipment_type="WEAPON" m_slots="6">

I wanted to put a String value in the 'authorize_name' field but my server only accepts int in this one and won't start with any other datatype.
My question now is, how can I change what type of data my server accepts from this field.
I tried src\com\aionemu\gameserver\model\templates\item\ItemTemplate.java and changed the datatype there, but it had no effect.

item_templates.xml -> authorize_name