Problem with xml load on android

Unity Engine
,
1

I need to load an exsisting xml file.
The xml located in StreamingAssets folder
There is my code

using UnityEngine; 
using System;
using System.IO;
using System.Collections;
using System.Collections.Generic; 
using System.Xml;

public class LoadLevel : MonoBehaviour
{   
	
	public bool needLoad;
	public bool playerIs;
	public GameObject wallObj;
	public GameObject cellObj;
	public GameObject orbObj;
	public GameObject player;
	public GameObject gamePlay;
	public int lvlNumber;
	private string filename;
	public Transform redCube;
	public GUIText texter;
	public GUIText texter2;
	public WWW www;
	
	void Start()
	{
		StartCoroutine("load");
	}
	
	void Update()
	{
		//texter.text = System.Convert.ToString(Path.DirectorySeparatorChar);
		//texter.text = Path.GetFullPath(Application.dataPath);
	}
	
	
	public void LoadData ()
	{
		if(needLoad)
		{	
			texter.text = "Load started";
			
			//StartCoroutine("load");
							
			//filename = "Levels/Level_"+ lvlNumber;
						
			//MemoryStream assetStream = new MemoryStream(www.bytes);
			
			//XmlTextReader reader = new XmlTextReader(assetStream);
			
			XmlDocument xmlDoc = new XmlDocument ();
								
			xmlDoc.Load(new StringReader(www.text));
			
			//texter2.text = xmlDoc.InnerText;
			
			XmlNodeList wallList = xmlDoc.GetElementsByTagName ("wall");
			XmlNodeList orbList = xmlDoc.GetElementsByTagName ("orb");
			XmlNodeList cellList = xmlDoc.GetElementsByTagName ("cell");
			XmlNodeList playerSpawn = xmlDoc.GetElementsByTagName("playerSpawn");
		
				
			foreach(XmlNode n in wallList)
			{
				string s1 = n.Attributes[0].Value;
				float x_coord = System.Convert.ToSingle (s1); 
				s1 = n.Attributes[1].Value; 
				float y_coord = System.Convert.ToSingle (s1); 
				s1 = n.Attributes[2].Value; 
				float z_coord = System.Convert.ToSingle (s1); 
							
				GameObject.Instantiate(wallObj,new Vector3(x_coord,y_coord,z_coord),Quaternion.Euler(new Vector3(90,0,0)));
					
			}
			foreach(XmlNode n in orbList)
			{
				string s1 = n.Attributes[0].Value;
				float x_coord = System.Convert.ToSingle (s1); 
				s1 = n.Attributes[1].Value; 
				float y_coord = System.Convert.ToSingle (s1); 
				s1 = n.Attributes[2].Value; 
				float z_coord = System.Convert.ToSingle (s1); 
							
				GameObject.Instantiate(orbObj,new Vector3(x_coord,y_coord,z_coord),Quaternion.Euler(new Vector3(90,0,0)));
					
			}
			
			
			foreach(XmlNode n in cellList)
			{
				string s1 = n.Attributes[0].Value;
				float x_coord = System.Convert.ToSingle (s1); 
				s1 = n.Attributes[1].Value; 
				float y_coord = System.Convert.ToSingle (s1); 
				s1 = n.Attributes[2].Value; 
				float z_coord = System.Convert.ToSingle (s1);
				s1 = n.Attributes[3].Value;
   				int isbig = System.Convert.ToInt32 (s1);
							
				GameObject o =  GameObject.Instantiate(cellObj,new Vector3(x_coord,y_coord,z_coord),Quaternion.Euler(new Vector3(90,0,0))) as GameObject ;
				o.GetComponent<Cell>().bigDot = isbig;
				
			}
			
			foreach(XmlNode n in playerSpawn)
			{
				string s1 = n.Attributes[0].Value;
				float x_coord = System.Convert.ToSingle (s1); 
				s1 = n.Attributes[1].Value; 
				float y_coord = System.Convert.ToSingle (s1); 
				s1 = n.Attributes[2].Value; 
				float z_coord = System.Convert.ToSingle (s1); 
						
				GameObject.Instantiate(player,new Vector3(x_coord,y_coord,z_coord),Quaternion.identity);
				
				
			}
			
			needLoad = false;
			Messenger.Broadcast("Level Loaded");
			StopCoroutine("load");
			Debug.Log("Level Loaded");
			
		}
		
		
	}
	
	IEnumerator load()
	{
		
		
		www = new WWW("jar:file://" + Application.dataPath + "!/assets/Level_" + lvlNumber + ".xml");
		
		yield return www;
		
		//texter.text = "Load complete";
		texter2.text = www.text;
	}
}

On phone screen i have a text from texter2.text = www.text;, but level not loading.
I think that the xml file not created from www.text;
Help pls, i can not solve this problem for the past three days…(

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