Vorrei visualizzare al momento dell'invio di un modulo i progressi che compie l'ActionResult nella pagina ...

ho provato in questo modo:
codice:
    public class HomeController : Controller
    {
        public string currentStatus = string.Empty;
        //
        // GET: /Home/

        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ActionResult Index(int aa = 0)
        {
            System.Threading.Thread.Sleep(2000);
            currentStatus = "prima";
            System.Threading.Thread.Sleep(2000);
            currentStatus = "seconda";
            System.Threading.Thread.Sleep(3000);
            currentStatus = "terza";
            System.Threading.Thread.Sleep(1000);
            currentStatus  = "quarta";
            System.Threading.Thread.Sleep(4000);
            currentStatus = "quinta";

            return View();
        }

        public ActionResult Progress(string test)
        {
            this.ControllerContext.HttpContext.Response.AddHeader("cache-control", "no-cache");
            return Json(currentStatus);
        }
    }
codice:
<script type="text/javascript">
 
function updateMonitor(status) {
    $("#currProgress").html("[currProgress]: " + status);
}

function Executefunc() {
                $.ajax(
                {
                    type: "Post",
                    url: "/Home/Progress",
                    data: { test: "aaa" },
                    dataType: "script",
                    success: function (progress) {
                        //alert(result);
                        if (progress >= 100) {
                            updateMonitor("Completed");
                            clearInterval(intervalId);
                        } else {
                            updateMonitor(progress + "%");
                        }
                        //window.open(result, "Ann")//Open the returned URL in a window
                    },
                    error: function (req, status, error) {
                        alert("An error occurred while processing your request.");
                    }
                });
            }, 100);
        }
 </script>

@using (Html.BeginForm())
{
    <input id="submitbtnbs" name="btnSubmit" type="submit" onclick="javascript: return Executefunc();" value="invia" />
}

<div id="monitors">
    <p id="currProgress"></p>

</div>
il post me lo esegue correttamente ...

solo che non mi richiama l'ActionResult Progress ...

Come posso risolvere???
Qualche consiglio??

Grazie in anticipo.