getting error "Operator '<' cannot be used with a left hand side of type 'Object' and a right hand side of type 'float'."

I am using this script as Zombie AI but it gives error......." Operator '<' cannot be used with a left hand side of type 'Object' and a right hand side of type 'float'."

 var Distance;
 var Target : Transform;
 var lookAtDistance = 25.0;
 var chaseRange = 15.0;
 var attackRange = 1.5;
 var moveSpeed = 5.0;
 var Damping = 6.0;
 var attackRepeatTime = 1;
 var TheDammage = 40;
 private var attackTime : float;
 var controller : CharacterController;
 var gravity : float = 20.0;
 private var moveDirection : Vector3 = Vector3.zero;
 
 function Start ()
 {
     attackTime = Time.time;
 }
 
 function Update ()
 {
     if(RespawnMenuV2.playerIsDead == false)
     {
         Distance = Vector3.Distance(Target.position, transform.position);
         
         if (Distance < lookAtDistance)
         {
             lookAt();
         }
         
         if (Distance > lookAtDistance)
         {
             GetComponent.<Renderer>().material.color = Color.green;
         }
         
         if (Distance < attackRange)
         {
             attack();
         }
         else if (Distance < chaseRange)
         {
             chase ();
         }
     }
 }
 
 function lookAt ()
 {
     GetComponent.<Renderer>().material.color = Color.yellow;
     var rotation = Quaternion.LookRotation(Target.position - transform.position);
     transform.rotation = Quaternion.Slerp(transform.rotation, rotation, Time.deltaTime * Damping);
 }
 
 function chase ()
 {
     GetComponent.<Renderer>().material.color = Color.red;
     
     moveDirection = transform.forward;
     moveDirection *= moveSpeed;
     
     moveDirection.y -= gravity * Time.deltaTime;
     controller.Move(moveDirection * Time.deltaTime);
 }
 
 function attack ()
 {
     if (Time.time > attackTime)
     {
         Target.SendMessage("ApplyDammage", TheDammage);
         Debug.Log("The Enemy Has Attacked");
         attackTime = Time.time + attackRepeatTime;
     }
 }
 
 function ApplyDammage ()
 {
     chaseRange += 30;
     moveSpeed += 2;
     lookAtDistance += 40;
 }

getting error "Operator '<' cannot be used with a left hand side of type 'Object' and a right hand side of type 'float'."................thanks