Change or modify the landing page after login

I see APM is in place, you can check in access session logs if the session.server.landinguri variable is being populated as intended. 

You can use variable assign box to change it, but keep it mind this will rewrite it every time; otherwise you can set up an iRule that modifies this value and will let you ise if-then statements at least. 

You can setup an iRule to rewrite it if you wish, but keep in mind that *all* access sessions will hit the iRule so it's better if you script it to be