How to load a new scene you create in current scene ? [Unity3D C#]

I make a 3Dworld with Unity and I want save my world in a menu, I save my world with :

EditorApplication.SaveScene("Assets/Scene/name.unity",true);

And I add my new Scene to my build setting with :

 var original = EditorBuildSettings.scenes;
     var newSettings = new EditorBuildSettingsScene[original.Length + 1];
     System.Array.Copy(original, newSettings, original.Length);
     var sceneToAdd = new EditorBuildSettingsScene("Assets/Scene/name.unity", true);
     newSettings[newSettings.Length - 1] = sceneToAdd;
     EditorBuildSettings.scenes = newSettings;

But when I want load my new scene without closing the game :

 Application.LoadLevel("name");

I have this error :

 Level 'name' (-1) couldn't be loaded because it has not been added to the build settings.
 To add a level to the build settings use the menu File->Build Settings...

When I take a look in my build settings, my new scene is added and checked. If I rebuild the game I can load my new scene but I doesn't want rebuild the game for load a new level when I just save it.

How I can refresh my build settings without close the game please ? Or How I can save my new scene more simply ?

Sorry for my poor english, I'm french.