Show numbers of online in navbar template

[rellect]

I want to show the number of online in the navbar template..
I create a plugin and use "global_bootstrap_init_start" hook.
this is the plugin :

PHP Code:

global $vbulletin;
 
$newuserinfo = array(
 'userid'   => $vbulletin->userstats['newuserid'],
 'username' => $vbulletin->userstats['newusername']
);
 
vB_Template::preRegister('navbar',array(
 'totalonline' => $activemembers
)); 

In all forum pages it's work, but in CMS it's show 0..
Someone know what should I do?