Vector3.Lerp not cooperating with me

my code is supposed to move smoothly between the values given by osc but it is not working

 public var RemoteIP : String = "127.0.0.1"; //127.0.0.1 signifies a local host (if testing locally
 public var SendToPort : int = 9000; //the port you will be sending from
 public var ListenerPort : int = 8050; //the port you will be listening on
 public var controller : Transform;
 public var gameReceiver = "Cube"; //the tag of the object on stage that you want to manipulate
 private var handler : Osc;

 //VARIABLES YOU WANT TO BE ANIMATED
 var yHeight : Transform; //the rotation around the y axis

 public function Start ()
 {
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     //make sure this game object has both UDPPackIO and OSC script attached

     var udp : UDPPacketIO = GetComponent("UDPPacketIO");
     udp.init(RemoteIP, SendToPort, ListenerPort);
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     handler.init(udp);
     handler.SetAllMessageHandler(AllMessageHandler);

 }
 Debug.Log("Running");

 function Update () {
     var go = GameObject.Find(gameReceiver);
     go.position = Vector3.Lerp(go.position, yHeight.position, Time.deltaTime * 5.0);
 }

 //These functions are called when messages are received
 //Access values via: oscMessage.Values[0], oscMessage.Values[1], etc

 public function AllMessageHandler(oscMessage: OscMessage){


     var msgString = Osc.OscMessageToString(oscMessage); //the message and value combined
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     //FUNCTIONS YOU WANT CALLED WHEN A SPECIFIC MESSAGE IS RECEIVED
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         default:
         break;
     }

 }


 //FUNCTIONS CALLED BY MATCHING A SPECIFIC MESSAGE IN THE ALLMESSAGEHANDLER FUNCTION
 public function Rotate(msgValue) : void //rotate the cube around its axis
  {
          yHeight.position = new Vector3(0,msgValue,0);
 }