BCE0051: Operator '<' cannot be used with a left hand side of type 'Object' and a right hand side of type 'float' !!!

hello , im doing a Ai script that when you approche to the gameObject it will start following you ( i'm sure it's a classic basic script for Pro's ;) ) but im get tree same Errors: -BCE0051: Operator '<' cannot be used with a left hand side of type 'Object' and a right hand side of type 'float'

in line 29.22 in line 36.22 and in line 42.22

 pragma strict
  var Distance;
 var lookAtDistance : float = 25;
 var attackRange : float = 15;
 var animator : Animator;
 
 var target : Transform; 
 var moveSpeed : float= 0;
 var rotationSpeed: float = 1; 
 
 private var myTransform : Transform; //current transform data of this enemy
 private var controller : CharacterController;
  
 function Awake()
 {
     myTransform = transform; //cache transform data for easy access/preformance
     controller = GetComponent(CharacterController); // cache the CharacterController
 }
  
 function Start()
 {
     target = GameObject.FindWithTag("Player").transform; //target the player
 }
  
 function Update () 
 {
 Distance = Vector3.Distance(target.position, transform.position);
     
     if (Distance < lookAtDistance)
     {
         animator.SetBool("idle" , true);
         animator.SetBool("walk" , false);
         
     }
     
     if (Distance > lookAtDistance)
     {
         animator.SetBool("idle" , true);
         animator.SetBool("walk" , false);
     }
     
     if (Distance < attackRange)
     {
         animator.SetBool("idle" , false);
         animator.SetBool("walk" , true);
         
     }
 
 
 
     // find the target direction:
     var dir: Vector3 = target.position - myTransform.position;
     dir.y = 0; // ignore height differences to avoid enemy tilting
     //rotate to look at the player
     myTransform.rotation = Quaternion.Slerp(myTransform.rotation, Quaternion.LookRotation(dir), rotationSpeed*Time.deltaTime);
     //move towards the player:
     controller.SimpleMove(myTransform.forward * moveSpeed);
 }

at first i thought puting float's would work on the variables but it don't please help me!!