BCE0019: 'position' is not a member of 'Object'.

Hello. I have a problem can you help me please?

my problem is BCE0019: 'position' is not a member of 'Object'.

my script is

 var spawnPoints:Transform;
 private var waypoint=new Array();
 private var mesafe:float;
 private var sayac:int=1;
 function Start(){
 
 
     var i=0;
     
     for(var child:Transform in spawnPoints){
     
     waypoint[i]=child;
     i++;
     }
     
 
 
 }
 function Update () {
 
 mesafe=Vector3.Distance(transform.position,waypoint[sayac].position);
 
 transform.LookAt(waypoint[sayac].position);
 
 transform.Translate(Vector3.forward/4);
 
 if(mesafe<=1){
 
     sayac++;
 
 }
 
 if(sayac>=waypoint.length){
     sayac=0;
 }
 
 
 }