Replacing template

[shaka]

Hey,

I have a problem. How am i replacing template in newreply.php? My plugin checks ID thread. Now i want replace template. I was looking for hook.

...
$plugins->add_hook("newreply_start", "zmiana_szablonu");

function zmiana_szablonu()
{
	global $mybb, $thread, $templates,;

	if($thread['fid']==80){
//change temp.
	}
}
...

I see in newreply.php:

	eval("\$newreply = \"".$templates->get("newreply")."\";");
	output_page($newreply);

There is a hook?

Who can help me?