Hi Lynne - That is exactly what I did - I assigned the value "Test123" to the variable, so it looks like it is the pre-registering which isn't working...
For example -
Code:
$templater = vB_Template::create('custom_template');
$templater->register('my_var', 'Test123');
$custom_template = $templater->render();
vB_Template::preRegister('threadbit', array('custom_template' => $custom_template));
{vb:raw custom_template} does not display "Test123"