I hope somebody of the author can help?
Very quickly I have used the php_exec plugin to intercept whether the querystring contain some parameter to perform custom page output accordingly.
I'd like to customize also the meta tags title and description in the same way, but as there is not a standard function, and everything depends on the plugin used here I am.
I tried to dissect your source code a bit, but I'm not a real php programmer so after a couple of hours try I have gave up. Cannot spend my time banging on the wall.
Can you please suggest me a way to override the description and title specified in the admin section?