Datastore inside plugin code

[Disasterpiece]

Hi again!

I'm basically through with my adminCP code of the plugin, while working on the code integration of the plugin itself, i got a little problem.

Due to caching mechanisms, I used datastore to store some information via cronjob.
If i want to access this information via adminCP file, it works with this code:

PHP Code:

$specialtemplates = array(
    'my_plugin'
); 


And later on:

PHP Code:

$this->cache = unserialize($vbulletin->my_plugin); 


Everything fine. But:
Inside the plugin code which should actually display the plugin on the forumhome page, I can't access the cache var.
$vbulletin->my_plugin is NULL. Obviously I have to tell vB that this cache should be loaded too.

So I tried adding this line to my cache_template -hook:

PHP Code:

if ($vbulletin->options['enable_my_plugin'])
{
    $cache[] = 'forumhome_my_plugin';
    $cache[] = 'my_plugin';
} 


But, nothing happens. Template gets loaded, but cache from datastore doesn't get loaded.

Any advise how and where i have to add the cache identifyer to?