specialtemplates and plugins ?

[Zachariah]

I am working on an add-on that adds $specialtemplates to forums/index.php but I am not having any success.

EX:
First, open your forum/index.php file and find:

PHP Code:

// get special data templates from the datastore
$specialtemplates = array(
    'userstats',
    'birthdaycache',
    'maxloggedin',
    'iconcache',
    'eventcache',
    'mailqueue'
); 


Replace with:

PHP Code:

 // get special data templates from the datastore
$specialtemplates = array(
    'userstats',
    'birthdaycache',
    'maxloggedin',
    'iconcache',
    'eventcache',
    'mailqueue',
      'stuff' 
); 


I've tried array_merge in cache_templates hook--nothing.

$specialtemplates = array_merge($specialtemplates, array('stuff',));

Ideas / thoughts ? - I know $globaltemplates works this way, but not $specialtemplates?