Calling an XML outside of unity

OK I know how to call and display xml file in unity from the asset list, but what do I need to change so that I can call from an xml that I just dump into the build folder so that I can edit it outside of unity without have to rebuild the project every time

Below is the ENTIRE project code it uses only one script at the moment I want to call from an xml outside of unity

UPDATE--I have used the first answer to call the xml from outside the program by declaring the file path. But this is not enough as I need to call the file without knowing the exact location and if I could force the XML to build in the resource folder than part of the problem would be done

Is it possible to use a Application.datapath to call the XML without declaring an exact location?

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 using System.Text;
 using System.Xml;
 using System.IO;
 
 
 
 public class TestGUI : MonoBehaviour {
     
     public GUISkin testSkin;
     
     public TextAsset QuestionList;
     
     public Rect textAreaSize;
     
     public Rect buttonSizeA;
     public Rect buttonSizeB;
     public Rect buttonSizeC;
     public Rect buttonSizeD;
     
     public Rect AnswerSizeA;
     public Rect AnswerSizeB;
     public Rect AnswerSizeC;
     public Rect AnswerSizeD;
     
     List<Dictionary<string,string>> levels = new List<Dictionary<string,string>>();
     Dictionary<string,string> obj;
     
     float width  = 1024;
     float height = 768;
 
     static int actualLevel = 1;
     static int LevelMaxNumber;
     static int WaipointCounter = 0;
     
     static string QuestionString = "";
     static string AnswerStringA  = "";
     static string AnswerStringB  = "";    
     static string AnswerStringC  = "";    
     static string AnswerStringD  = "";    
     
     string path = "C:/Users/MymIntern2/Desktop/Builds/testbuild_Data/gamexmldata.xml";
     
     void OnGUI() {
         
     GUI.skin = testSkin;
         
     float resolutionX = Screen.width / width;
     float resolutionY = Screen.height / height;
             
     GUI.matrix = Matrix4x4.TRS(new Vector3(0, 0, 0), Quaternion.identity, new Vector3(resolutionX, resolutionY, 1));    
         
     GUI.TextArea (textAreaSize, QuestionString);
         
     if(GUI.Button(buttonSizeA, "A"))    // make a button
         {
             print ("Button A");
             WaipointCounter = 4;
         }
     GUI.Label (AnswerSizeA, AnswerStringA);
 
     if(GUI.Button(buttonSizeB, "B"))    // make a button
         {
             print ("Button B");
         }
     GUI.Label (AnswerSizeB, AnswerStringB);
 
     if(GUI.Button(buttonSizeC, "C"))    // make a button
         {
             print ("Button C");
         }
     GUI.Label (AnswerSizeC, AnswerStringC);
 
     if(GUI.Button(buttonSizeD, "D"))    // make a button
         {
             print ("Button D");
         }
     GUI.Label (AnswerSizeD, AnswerStringD);
 
     }
     
     void Start()
     {    //Timeline of the Level creator
         GetLevel();
         StartCoroutine(LevelStartInfo(1.0F));
         LevelMaxNumber = levels.Count;
     }
     
     public void GetLevel()
     {
         XmlDocument xmlDoc = new XmlDocument(); // xmlDoc is the new xml document.
         StreamReader reader = new StreamReader(path);
         xmlDoc.LoadXml(reader.ReadToEnd()); // load the file.
         reader.Close();
         XmlNodeList levelsList = xmlDoc.GetElementsByTagName("level"); // array of the level nodes.
     
         foreach (XmlNode levelInfo in levelsList)
         {
             XmlNodeList levelcontent = levelInfo.ChildNodes;
             obj = new Dictionary<string,string>(); // Create a object(Dictionary) to colect the both nodes inside the level node and then put into levels[] array.
             
             foreach (XmlNode levelsItens in levelcontent) // levels itens nodes.
             {
                 //if(levelsItens.Name == "name")
                 //{
                 //    obj.Add("name",levelsItens.InnerText); // put this in the dictionary.
                 //}
                 
                 if(levelsItens.Name == "tutorial")
                 {
                     obj.Add("tutorial",levelsItens.InnerText); // put this in the dictionary.
                 }
                 
                 if(levelsItens.Name == "object")
                 {
                     switch(levelsItens.Attributes["name"].Value)
                     {
                         case "Right":  obj.Add("Right" ,levelsItens.InnerText); break; // put this in the dictionary.
                         case "Wrong1": obj.Add("Wrong1",levelsItens.InnerText); break; // put this in the dictionary.
                         case "Wrong2": obj.Add("Wrong2",levelsItens.InnerText); break; // put this in the dictionary.
                         case "Wrong3": obj.Add("Wrong3",levelsItens.InnerText); break; // put this in the dictionary.
                     }
                 }
                 
                 //if(levelsItens.Name == "finaltext")
                 //{
                 //    obj.Add("finaltext",levelsItens.InnerText); // put this in the dictionary.
                 //}
             }
             levels.Add(obj); // add whole obj dictionary in the levels[].
         }
     }
     
     IEnumerator LevelStartInfo(float Wait)
     {
         //string lvlName = "";
         //levels[actualLevel-1].TryGetValue("name",out lvlName);
         
         string tutorial = "";
         levels[actualLevel-1].TryGetValue("tutorial",out QuestionString);
         
         levels[actualLevel-1].TryGetValue("Right" ,out AnswerStringA);
         levels[actualLevel-1].TryGetValue("Wrong1",out AnswerStringB);
         levels[actualLevel-1].TryGetValue("Wrong2",out AnswerStringC);
         levels[actualLevel-1].TryGetValue("Wrong3",out AnswerStringD);
         
         //levels[actualLevel-1].TryGetValue("finaltext",out finaltext);
         yield return new WaitForSeconds(Wait);
     
     }
     
     void Update()
     {
         if(WaipointCounter == 4)
         {
             if(actualLevel<LevelMaxNumber)
             {
                 actualLevel+=1;
                 WaipointCounter = 0;
                 StartCoroutine(FinishLevel(1.0F));
             }
             else
             {
                 actualLevel=1;
                 WaipointCounter = 0;
                 StartCoroutine(FinishLevel(1.0F));
             }
         }
     
     }
     
     IEnumerator FinishLevel(float Wait)
     {
     
         //yield return new WaitForSeconds(Wait);
         //GameObject FinalText_GUI = Instantiate(FinalText) as GameObject;
         //FinalText_GUI.guiText.text = finaltext;
         
         yield return new WaitForSeconds(3.0f);
         Application.LoadLevel(0);
     
     }
     
     
 }