Rendering a template in header

[Michael.A]

Hook Location:
global_start

PHP Code:

if ($vbulletin->options['teck_brb_enable']
    and is_member_of($vbulletin->userinfo, explode(',',$vbulletin->options['teck_brb_groups'])))
{ 
$teck_brb_temp = "teck brb away";

$teck_brb = array();
$teck_brb['url'] = $vbulletin->options['teck_brb_url'];
$teck_brb['s_i_path'] = $vbulletin->options['teck_brb_s_i_path'];
$teck_brb['b_i_path'] = $vbulletin->options['teck_brb_b_i_path']; 

$templater = vB_Template::create('teck_brb_temp'); 
    $templater->register('teck_brb_temp', $teck_brb_temp);
    $templater->register('teck_brb', $teck_brb); 
    $templatevalues['teck_brb_temp'] = $templater->render();
    vB_Template::preRegister('header',array('teck_brb_temp' => $teck_brb_temp));


} 


trying to have Template $teck_brb_temp to show in the header!!