how to create the magnet similar to the real magnet ?

Hello Every One,

I need to create the magnet object with repulsion. I created the magnet it is pulling the object if that object is with in the radius. Normally Magnet has a two poles North and south now my object is sticking the north side if i rotate the object it does not sticking that side its changing but i want to do if i rotate the object as well as the object also rotate that corresponding side. Please help me to do this..

Here is the code:

 var MagnetLayer : LayerMask;
 var FieldPosition : Vector3;
 var FieldRadius : float;
 var FieldForce : float;
 var rot : float = 2.0f;
 
 function FixedUpdate ()
 {
     transform.Translate(Input.GetAxis("Horizontal") * Time.deltaTime * 5, 0.0f, Input.GetAxis("Vertical") * Time.deltaTime * 5);
     if(Input.GetKey(KeyCode.R))
     {
         transform.Rotate(Vector3.up, Space.Self);
     }
     var colliders : Collider[];
     var rigidbody : Rigidbody;
     
     colliders = Physics.OverlapSphere (transform.position + FieldPosition, FieldRadius, MagnetLayer);
 
     for(var collider in colliders)
     {
         rigidbody = collider.rigidbody;
         if(rigidbody == null)
         {
             continue;
         }
         rigidbody.AddExplosionForce (FieldForce * -1, transform.position + FieldPosition, FieldRadius);
     }
 }
 
 function OnDrawGizmosSelected()
 {
     Gizmos.color = Color.red;
     Gizmos.DrawWireSphere (transform.position, FieldRadius);
 }