Rewrite vb3 to vb4 templatecache

[heugabel]

$search_text = '<!-- end logged-in users -->';
$vbulletin->templatecache['FORUMHOME'] = str_replace($search_text, $search_text . fetch_template('forumhome_xyz'), $vbulletin->templatecache['FORUMHOME']);

how i can rewrite this for vb4?

thank you

[Badshah93]

Plugin Hook: forumhome_complete

$myvar = vB_Template::create('lastpages')->render();
vB_Template::preRegister('FORUMHOME',array('myvar' => $myvar));
$vbulletin->templatecache['FORUMHOME'] = str_replace('<!-- end logged-in users -->','<!-- end logged-in users -->\' . $myvar . \'',$vbulletin->templatecache['FORUMHOME']);

[heugabel]

thank you