ProxyConnect and blank cyrillic usernames

Hi!
I am using ProxyConnect to integrate Vanilla Forums with my project.
I am from Russia, so users of my project have usernames in format "Name Surname" with cyrillic letters.
At the moment of user registration ProxyConnect register the user with blank username, but if I doing the test on the ProxyConnect settings page ProxyConnect display cyrillic username right.
Vanilla have complicated framework and tracking this problem for newbe may take a long time, so if you can help me I will be gratefull.
0
Answers
RESOLVED!
class.proxyauthenticator.php
line 59:
I am using only cyrillic usernames, so i don't need latin letters. And "а-яА-я" don't work - don't know why.