Help with a header plugin...

[DivinoZarathos]

Hi all! I'm trying to create a random quote plugin for my board's header.
So far, i created the following plugin on global_bootstrap_init_start:

if ($result = $vbulletin->db->query_first
	("
		SELECT text, author
		FROM " . TABLE_PREFIX . "cs_randomquotes
		WHERE approved = 1
		ORDER BY RAND() LIMIT 1
	")
)
{
	$templater = vB_Template::create('header_randomquote');
		$templater->register('author', $result['author']);
		$templater->register('text', $result['text']);

	$randomquote = $templater->render();
}
else
	$randomquote = '';

vB_Template::preRegister('header', array('randomquote' => $randomquote));

Then I created the header_randomquote template:

<div class="text">{vb:raw text}</div>
<vb:if condition="$author">
<div class="author">{vb:raw author}</div>
</vb:if>

And I finally edited my header template adding:

<div id="header_randomquote">{vb:raw randomquote}</div>

Query is ok (well, I think it's ok to get random entries)... but nothing is being shown. Can you find any error in my code? :S