Need to enlarge font inside alert box

I'm having some trouble with the alert boxes, as the character size is way too small to support Chinese.

http://puu.sh/fjsMf/219a3d0d7d.png

I tried to look the alert style up in HabboUI but I couldn't find any way to make it larger.

Code:

<?xml version="1.0" encoding="UTF-8"?> <layout name="achievement_notification" width="436" height="227" version="0.1" uid="1ACC4B35-377F-A5C0-2832-F4B8FD1B43DC"> <window> <frame x="0" y="5" width="436" height="227" params="164097" style="1" caption="%24%7Bnotifications.motd.title%7D" color="0x4c4c4c"> <children> <border x="1" y="0" width="420" height="160" params="16" style="0" name="notifications_border" caption="Messages%20for%20you"> <children> <scrollable_itemlist_vertical x="5" y="6" width="410" height="149" params="16" style="0" name="message_list" caption="Messages%20for%20you"/> </children> </border> <button x="200" y="168" width="30" height="26" params="131089" style="0" name="close" caption="%24%7Bgeneric.ok%7D"/> </children> </frame> </window> </layout>

I think it's somethin with style="0" but where do I change the different styles then?
Thank you in advance ^^