TBS Joomla 1.6 and Phoca PDF

TBS dynamic article is not converted by Phoca PDF. I edited the PDF generator script provided by Joomla (/components/com_content/views/article/view.pdf.php)  and i added the 2 lines suggested:

JPluginHelper::importPlugin('content');
$results = $dispatcher->trigger('onPrepareContent', array (& $article, & $params, 0));

but the problem continues. Any idea how to solve this situation??

Thanks in advance