loading XML quiz

in here i have code about simple quiz using xml as database

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

public class dbxml : MonoBehaviour {

 static int actualLevel=1;
 static int LevelMaxNumber;
 static int WaipointCounter;

 static string JawabanA_Character;
 static string JawabanB_Character;
 static string JawabanC_Character;
 static string JawabanD_Character;

 private string finaltext= "";

 public GameObject LevelName;
 public GameObject Soal_GUI;
 public GameObject jawaban_GUI;





 public TextAsset GameAsset;

 List<Dictionary<string,string>> levels = new List<Dictionary<string,string>>();
 Dictionary<string,string> obj;


 // Use this for initialization
 void Start () {
     GetLevel ();
     StartCoroutine(LevelStartInfo(1.0F));
     LevelMaxNumber = levels.Count;
 }
 
 // Update is called once per frame
 //void Update () {
 
 //}

 public void GetLevel()
 {
     XmlDocument xmlDoc = new XmlDocument ();
     xmlDoc.LoadXml (GameAsset.text);
     XmlNodeList levelsList= xmlDoc.GetElementsByTagName("levels");

     foreach (XmlNode LevelInfo in levelsList) 
     {
         XmlNodeList levelcontent = LevelInfo.ChildNodes;
         obj= new Dictionary<string,string >();

         foreach(XmlNode levelIsItens in levelcontent)
         {
             if(levelIsItens.Name="name")
             {
                 obj.Add("name", levelIsItens.InnerText);
             }
             if(levelIsItens.Name="soal")
             {
                 obj.Add("soal",levelIsItens.InnerText);
             }
             if(levelIsItens.Name="jawaban")
             {
                 switch(levelIsItens.Attributes["name"].Value)
                 {
                     case "jawabanA": obj.Add("jawabanA", levelIsItens.InnerText);break;
                     case "jawabanB": obj.Add("jawabanB", levelIsItens.InnerText);break;
                     case "jawabanC": obj.Add("jawabanC", levelIsItens.InnerText);break;
                     case "jawabanD": obj.Add("jawabanD", levelIsItens.InnerText);break;
                 }
             }

         }
         levels.Add(obj);
     }
 }

 IEnumerator LevelStartInfo(float Wait)
 {
     string lvlName = "";
     levels [actualLevel - 1].TryGetValue ("name", out lvlName);

     string soal = "";
     levels [actualLevel - 1].TryGetValue ("soal", out soal);

     string jawaban = "";
     levels [actualLevel - 1].TryGetValue ("jawabanA", out jawaban);
     levels [actualLevel - 1].TryGetValue ("jawabanB", out jawaban);
     levels [actualLevel - 1].TryGetValue ("jawabanC", out jawaban);
     levels [actualLevel - 1].TryGetValue ("jawabanD", out jawaban);

     GameObject LevelName = Instantiate (LevelName) as GameObject;
     LevelName.GetComponent<GUIText> ().text = lvlName;

     GameObject Soal_GUI = Instantiate (Soal_GUI) as GameObject;
     Soal_GUI.GetComponent<GUIText> ().text = soal;

     for (i=0; i<jawaban; i++) 
     {
         GameObject jawaban_GUI=Instantiate(jawaban_GUI) as GameObject;
         jawaban_GUI.GetComponent<GUIText>().text=jawaban;

     }
     
 }

}

I have error in foreach XML node, the error say 'Property or indexer 'system.XMLNode.Name' cannot be assigned to(it is read only'

so how to fix this?