Making my variable global.

I was trying to change the sprite image of my character from another scene. I made two scripts 1. Sprite_Img.js 2. changeTheSprite.js

I have attached Sprite_Img.js to my character object and changeTheSprite,js to a image

But still it isn't working well. I dont know why. Please Help

Sprite_Img.js

 #pragma strict
 
 var sprite2:Sprite;
 static public var sprite1:Sprite;
 
 
 
 function Awake(){
 sprite2 = sprite1;
 }
 
 function Start (){
 GetComponent(SpriteRenderer).sprite = sprite2;
 }

changeTheSprite.js

 #pragma strict
 
 var sprite3 : Sprite;
 function Start() {
  if (Input.GetMouseButton(1)){       
      Sprite_Img.sprite1 = sprite3;
      }
 }
 

THANK YOU