I made a custom page called resources (qa-page-resources-default.php) and 4 sub-pages (qa-page-resources-<custom subpage name>.php).
Everything works well, but I'm trying to add a sub-navigation menu (like the admin section, for example).
So I alter $qa_content['navigation']['sub'] but it won't show anything.
Altering $qa_content['title'] or $qa_content['custom'] works well.
How do I fix this?