Has $bbuserinfo['username'] changed in 3.5.4

[ChristianA]

I call vb from pages outside vb like:

chdir("../forum/");
include('./global.php');
define('CWD', '/home/www/forum');

I have used $bbuserinfo['username']; to get the user name befor but this has stopped to work. What can I use instead

[Xenon]

it's $vbulletin->userinfo in 3.5.x