Help me with this plugin code plz (cache_templates)

[fly]

What is wrong with this code?

if (THIS_SCRIPT == 'index')
{
// merge the templates we need
$globaltemplates[] = 'forumhome_forumbit_level3_post';
}

In the cache_templates hook.

I still get the error:
Uncached templates: forumhome_forumbit_level3_post (1)

Thanks for any help guys

Anyone? Please?