Cannot Instantiate Object

There are no errors on console but the script doesnt work right , it doesnt spawning object , here is the script ;

 #pragma strict
 public var haydutini : Rigidbody ;
 private var inpos = new Array();
 private var spawnpos : Vector3 ;
 private var i : int ;
 private var randbool : boolean = false ;
 function Start () {
 var spawnlair : Rigidbody;
 randbool = true;
 for(i=0 ; i<inpos.length ; i++)
 {
 spawnpos = inpos[i];
 spawnlair = Instantiate(haydutini,spawnpos,Quaternion.identity);
 }
 
 }
 
 function Update () 
 {
 if(randbool)
 {
 inpos[0] = Vector3(Random.Range(857.0f,1173.0f),81.3f,Random.Range(1077.0f,1500.0f));
 inpos[1] = Vector3(Random.Range(960.0f,1240.0f),103.0f,Random.Range(2200.0f,2800.0f));
 inpos[2] = Vector3(Random.Range(0.0f,220.0f),81.3f,Random.Range(2500.0f,4900.0f));
 inpos[3] = Vector3(Random.Range(1470.0f,2136.0f),116.5f,Random.Range(1930.0f,1990.0f));
 inpos[4] = Vector3(Random.Range(2680.0f,3200.0f),81.3f,Random.Range(1350.0f,1770.0f));
 inpos[5] = Vector3(Random.Range(3600.0f,4000.0f),81.3f,Random.Range(3600.0f,4000.0f));
 inpos[6] = Vector3(Random.Range(3600.0f,5000.0f),81.3f,Random.Range(0.0f,200.0f));
 inpos[7] = Vector3(Random.Range(4850.0f,4990.0f),165.0f,Random.Range(1000.0f,2800.0f));
 inpos[8] = Vector3(Random.Range(3350.0f,3750.0f),81.3f,Random.Range(300.0f,848.0f));
 inpos[9] = Vector3(Random.Range(3830.0f,4027.0f),81.3f,Random.Range(2200.0f,2525.0f));
 inpos[10] = Vector3(Random.Range(4600.0f,4990.0f),81.3f,Random.Range(3170.0f,3400.0f));
 randbool = false;
 }
 }