EAC Restrict Access does not work for Exchange 2016 via iApp

Added a new irule, I was hoping to display this page after the user is authenticated via the apm. Any thought's?

Thanks in advance. Josh

priority 899
when HTTP_REQUEST {
        switch -glob -- [string tolower [HTTP::path]] {
        "/ecp*" {
             Respond with a splash page with redirection.
            HTTP::respond 200 content {
              
                 
                    External ECP Access Disabled
                 
                 
                    External Exchange Control Pannel (ECP)
                    We are sorry, for security reasons external ECP access is disabled. 
                    To return click 
                 
              
                }   
            }

    }

}