Can't get SendMessage in webpage to send info to the web player

Can't get SendMessage in webpage to send info to the web player

I am trying to get the containing webpage to send information to the unity web player with no luck.

I followed what they have here: http://docs.unity3d.com/Manual/UnityWebPlayerandbrowsercommunication.html

But I read other comments on this and found that people advise making a call to a function on the containing webpage from the web player through the start function, to make sure it's loaded. Then I have that function execute SendMessage to send a text string back to the web player.

In the function (MyFunction) in Unity I just have it set a String variable to the text that is sent by SendMessage, then in OnGUI, I want it to display that value in a box, but I'm not able to get the value from SendMessage and assign it to the variable in my unity script.

Here is what I have:

In Unity:

myObjectScript.js ( this is attached to an object named MyObject)

 #pragma strict
 
 var myMessage : String = "testing..";
 
 function Start ()
 {
     Application.ExternalCall("DoSomething");
 }
 
 function OnGUI ()
 {
     GUILayout.Box("myMessage: " + myMessage);
 }
 
 
 function MyFunction(param : String)
 {
     myMessage = param;
 }

In the html file: (See the function DoSomething at the bottom. The rest is copied from the code generated by unity for the html file.)

 var config = {
     width: 960, 
     height: 600,
     params: { enableDebugging:"1" }
                 
     };
     var u = new UnityObject2(config);
 
 jQuery(function() {
 
     var $missingScreen = jQuery("#unityPlayer").find(".missing");
     var $brokenScreen = jQuery("#unityPlayer").find(".broken");
     $missingScreen.hide();
     $brokenScreen.hide();
                 
     u.observeProgress(function (progress) {
         switch(progress.pluginStatus) {
             case "broken":
                 $brokenScreen.find("a").click(function (e) {
                     e.stopPropagation();
                     e.preventDefault();
                     u.installPlugin();
                     return false;
                 });
                 $brokenScreen.show();
             break;
             case "missing":
                 $missingScreen.find("a").click(function (e) {
                     e.stopPropagation();
                     e.preventDefault();
                     u.installPlugin();
                     return false;
                 });
                 $missingScreen.show();
             break;
             case "installed":
                 $missingScreen.remove();
             break;
             case "first":
             break;
         }
     });
     u.initPlugin(jQuery("#unityPlayer")[0], "webcomm.unity3d");
     function DoSomething()
     {
              u.getUnity().SendMessage("MyObject", "MyFunction", "Hello!");
     }
 });