Loading a scene isn't removing objects from previous scenes.

I have been trying to set up a loading screen for my game, and have ran in to a problem that i just can't think why it's happening. When i switch to a new scene using (application.loadlevel) all the objects from the last scene get carried over. I think it might be the way i am trying to make the loadingscenemanger a persistent object. here is the code.

Loading scene

Code (CSharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4. using UnityEngine.UI;
5.  
6.  
7. public class LoadingScreenNew : MonoBehaviour {
8.  
9.   static LoadingScreenNew instance;
10.  
11.   public Text loadingText;
12.   public Canvas canvas;
13.  
14.   private int loadProgress;
15.  
16.  
17.   void Awake()
18.   {
19.  
20.   if (instance)
21.   {
22.   Destroy(gameObject);
23.   hide();
24.   return;
25.   }
26.   instance = this;
27.   canvas.enabled = false;
28.   DontDestroyOnLoad(this);  //make this object persistent between scenes
29.  
30.   }
31.  
32.   public static void hide()
33.   {
34.   if (!InstanceExists())
35.   {
36.   return;
37.   }
38.   instance.canvas.enabled = false;
39.   }
40.   //function to check if the persistent instance exists
41.   static bool InstanceExists()
42.   {
43.   if (!instance)
44.   {
45.   return false;
46.   }
47.   return true;
48.  
49.   }
50.  
51.   // Update is called once per frame
52.   public void Show(string levelName) {
53.   StartCoroutine(DisplayLoadingScreen(levelName));
54.   }
55.  
56.  
57.   IEnumerator DisplayLoadingScreen(string level)
58.   {
59.   canvas.enabled = true;
60.  
61.   loadingText.text = "Loading Progress: " + loadProgress + "%";
62.  
63.   AsyncOperation async = Application.LoadLevelAdditiveAsync(level);
64.  
65.   while (!async.isDone)
66.   {
67.   loadProgress = (int)(async.progress * 100);
68.   loadingText.text = "Loading Progress: " + loadProgress + "%";
69.   yield return null;
70.   }
71.   }
72. }
73.  
74.  

Calling loading scene operation / Sending level name

Code (CSharp):

1.         public void loadLevel(string LevelName)
2.         {
3.             load.Show(LevelName);
4.             Application.LoadLevel(LevelName);
5.         }

can anyone spot what i have done wrong and why the object's from the last scene are being carried over.

"Never mind fixxed it" -

But for some reason the progress is always 0% don't know why the text wont update itself.

 

Code (csharp):

1.  
2. (int)(async.progress*100f);
3.  

without the f it'll be implicitly casting to an int and making async.progress 0, i think

 

Awh, i don't think it's a casting issue that is the problem shamefully. I think i have to call it from a update or somthing because of it returning.