Trouble changing UI Image Sprite

Questions & Answers
1

I try to set up a little script so that the player’s vehicle of choice remains selected between game sessions. I got this so far, tried to new docs for some examples but couldnt figure it out yet; I am not a programmer, just fiddling about with the new UI system. Please help with any pointers. I am doing something wrong here and can’t see what. Thanks!

#pragma strict

var planeImageObject : GameObject;
var PlaneSprite1 : Sprite;
var PlaneSprite2 : Sprite;

function Start () {
	
    if (PlayerPrefs.GetInt("planeType") == 1){
       
         var img = planeImageObject.GetComponent<Image>();
         img.overrideSprite = PlaneSprite1;
         
    }
    else if (PlayerPrefs.GetInt("planeType") == 2){
    	 
    	 var img = planeImageObject.GetComponent<Image>();
         img.overrideSprite = PlaneSprite2;
    }
}
2

if (PlayerPrefs.GetInt(“planeType”) == 1){

      var img = planeImageObject.GetComponent<Image>();
      img.sprite = PlaneSprite1;
      
 }
 else if (PlayerPrefs.GetInt("planeType") == 2){
      
      var img = planeImageObject.GetComponent<Image>();
      img.sprite = PlaneSprite2;
 }
3

#pragma strict

   var planeImageObject : GameObject;
   var PlaneSprite1 : Sprite;
   var PlaneSprite2 : Sprite;
   var PlaneSprite3 : Sprite;
   var PlaneSprite4 : Sprite;
   var PlaneSprite5 : Sprite;
   var PlaneSprite6 : Sprite;
      
   function Start () {
   
   	   var img = planeImageObject.GetComponent(UI.Image);
       
       if (PlayerPrefs.GetInt("planeType") == 1){
     
          img.sprite = PlaneSprite1;
          
       }
       else if (PlayerPrefs.GetInt("planeType") == 2){
     
           img.sprite = PlaneSprite2;
     
       }
       else if (PlayerPrefs.GetInt("planeType") == 3){
         
            img.sprite = PlaneSprite3;
       }
       else if (PlayerPrefs.GetInt("planeType") == 4){
           
           img.sprite = PlaneSprite4;
       }
       else if (PlayerPrefs.GetInt("planeType") == 5){
         
             img.sprite = PlaneSprite5;
       }
       else if (PlayerPrefs.GetInt("planeType") == 6){
         
           img.sprite = PlaneSprite6;
       }
   }