SpriteText Update from a second script

I don't understand why this doesn't work? I am trying to update a SpriteText from a second script but I get this error:

NullReferenceException: Object reference not set to an instance of an object
myScript.Start() (at Assets/Scripts/myScript.cs


myText.cs

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class myText : MonoBehaviour{
5.     public static myText Instance;
6.     public SpriteText txt;
7.     void Start(){
8.         updateSpriteText();
9.     }
10.     public void updateSpriteText(){
11.         txt.Text = "myText";
12.     }
13. }

myScript.cs

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. public class myScript : MonoBehaviour{
6.     void Start(){
7.         myText.Instance.updateSpriteText();
8.     }
9. }
10.  

Thanks!

 

you nvr assign anything to Instance that why it produce the error
Set the Instance to the script in Start() that shld fixed it

 

I have already assign the SpriteText txt in the Inspector.
This is already what I am doing in Start(), it doesn't work.
But it should work anywhere, in myScript.cs I just want to call the updateSpriteText() from the script myText.cs.

 

i think this shld solve the problem:
Instance = new myText(); in the start()

 

Thank, with Instance = this; there is no NullReferenceException error anymore.
But the call of this function bellow is still not executing, nothing happen.
What else could I have miss?

myText.Instance.scoresUpdate();

myText.cs

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class myText : MonoBehaviour{
5.      public static myText Instance;
6.      public SpriteText txt;
7.      public int scores= 0;
8.      void Awake(){        
9.          Instance = this;
10.      }
11.      void Start(){
12.          updateSpriteText();
13.      }
14.      public void updateSpriteText(){
15.          print("Enter") + scores;
16.          txt.Text = "Scores: " + scores;
17.      }
18.      public void scoresUpdate(){
19.          ++scores;
20.          updateSpriteText();
21.      }
22. }

myScript.cs

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class myScript : MonoBehaviour{
5.      public static myScript Instance;
6.      void Awake(){        
7.          Instance = this;
8.      }
9.      void Update(){
10.         if(Input.GetKeyDown("space")){
11.              myText.Instance.scoresUpdate();
12.         }
13.      }
14. }

 

try print("Enter"); in the updateSpriteText() if it enter, the problem is with the txt
maybe try txt = new SpriteText()

 

Thank! with the print("Enter"); I saw that the problem was with the SpriteText.
I could not assign the same SpriteText in the Inspector that has the myText.cs script.
The only way I am able to make it work is by creating two SpriteText game object that refer each other in the Inspector myText.cs script.

Maybe there is an another way by using a single SpriteText...