MapPageRoute Arabic characters not working with Arabic characters

Question

Is there any way to get this work with arabic characters? I get HTTP Error 404.0 - Not Found

        routes.MapPageRoute("Ahmad", "Ahmad", "~/asheikh.aspx");
        routes.MapPageRoute("AhmadAr", "أحمد", "~/asheikh.aspx");

last one isn't working one is not working when calling the domainname/أحمد but it does work when calling domainname/ِAhmad