[Robert9]

PHP Code:

if($vbulletin->options['ut_enabled']) { 
    $ut_changeuser =& datamanager_init('User', $vbulletin, ERRTYPE_ARRAY); 
    $ut_changeuser->set_existing(fetch_userinfo($userid)); 
    $ut_changeuser->set('username', strtolower($username)); 
    $ut_changeuser->set('username', ucfirst($username)); 
    $ut_changeuser->save(); 
} 


I have changed it for my needs, but it seems this doesnt work.