I made a variable in a plugin. How do I use it in a template now?

[Jeremy8]

This is my plugin:

PHP Code:

$timestamp = TIMENOW - $vbulletin->options['hourdiff'];
$hourofday = date("G", $timestamp );

$templater = vB_Template::create('headinclude');
$templater->register('hourofday', $hourofday);
$templater->render(); 


So now I get my variable in my template like this right? {vb:raw hourofday}

But it doesn't let me do this? <vb:if condition="{vb:raw hourofday} == 1">

I want to do that...