How to use... $template_hook[postbit_userinfo_right_after_posts]?

[Jaxel]

I am using this hook as follows:

<plugin active="1" executionorder="5">
	<title>Ranking Ladder Postbit Crowns</title>
	<hookname>postbit_display_start</hookname>
	<phpcode><![CDATA[if ($vbulletin->options['rankingladder_postbit'] && $post['rank_ladder'])
	{
		$filename = $vbulletin->options['rankingladder_filename'];
		$thumbdir = $vbulletin->options['rankingladder_thumbdir'];
		eval('$template_hook[postbit_userinfo_right_after_posts] = "' . fetch_template('rankings_postbit') . '";'); 
	}]]></phpcode>
</plugin>

It works GREAT in public postbits... but it doesnt seem to be working in PM postbits. Am I using the wrong hookname?