Inserting custom template after footer?

[BSMedia]

I've created a simple custom template

Name: bsmedia
Content:

This is a simple template to insert after footer

I tried to create a plugin at global_start with

$templater = vB_Template::create('bsmedia');
$template_hook[footer_links] .= $templater->render();

Even if i stick

{vb:raw bsmedia}

In the template, it still doesn't appear.
But for some reason it doesn't work?