Move Object Smoothly

I want this the objects in my array to move from one point to another point smoothly. I have tried a bunch of stuff and can't seem to get this to work. The code I am using now is below and also the error I am getting when I try this?

Code

 var spikeLeftArray : GameObject[];
 var spikeLeftClonesArray : GameObject[];
 
 function Start ()
 {        
     for (var j : int = 0; j < 3; j++)
     {
        spikeLeftClonesArray[j] = Instantiate(spikeLeftArray[j], Vector3(0, Random.Range(-3, 3), 0), Quaternion.identity);
     }
 }

 function OnCollisionEnter2D (col: Collision2D)
 {
         if (col.gameObject.tag == "RightWall")
         {
         
             for (var j : int = 0; j < spikeLeftClonesArray.Length; j++) 
             {        
                 spikeLeftClonesArray[j].transform.position = transform.position = Vector3.Lerp(3, transform.position, transform.position);
             }
         }
 }

Error

  BCE0017: The best overload for the method 'UnityEngine.Vector3.Lerp(UnityEngine.Vector3, UnityEngine.Vector3, float)' is not compatible with the argument list '(int, UnityEngine.Vector3, UnityEngine.Vector3)'.