EAC Restrict Access does not work for Exchange 2016 via iApp

priority 899
when HTTP_REQUEST {
     Bar admin access:
    if { [string tolower [HTTP::uri]] starts_with "/ecp/?exch" } {
     Bar access from everybody:
    if { [HTTP::uri] starts_with "/ecp" } {
        HTTP::respond 403 content {
            
               
                  External ECP Access Disabled
               
               
                  External Exchange Control Pannel (ECP)
                  We are sorry, for security reasons external ECP access is disabled.
                  To return click 
               
            
        } "Content-Type" "text/html" Connection close
    } 
}