From Mac to IOS code Error

I have recently made this simple enamy ai script for chasing enemies in my game. It worked fine with Mac Pc and Linex platform, but now I am now developing for IOS. Can Sombody please rewrite this correctly. i run into these errers :

Assets/AdvancedAI.js(27,22): BCE0051: Operator '<' cannot be used with a left hand side of type 'Object' and a right hand side of type 'float'.

Assets/AdvancedAI.js(34,22): BCE0051: Operator '>' cannot be used with a left hand side of type 'Object' and a right hand side of type 'float'.

Assets/AdvancedAI.js(39,22): BCE0051: Operator '<' cannot be used with a left hand side of type 'Object' and a right hand side of type 'float'.

Assets/AdvancedAI.js(44,27): BCE0051: Operator '<' cannot be used with a left hand side of type 'Object' and a right hand side of type 'float'.

Assets/AdvancedAI.js(61,9): BCE0005: Unknown identifier: 'moveDirection'.

Assets/AdvancedAI.js(62,9): BCE0005: Unknown identifier: 'moveDirection'.

Assets/AdvancedAI.js(64,9): BCE0005: Unknown identifier: 'moveDirection'.

Assets/AdvancedAI.js(65,25): BCE0005: Unknown identifier: 'moveDirection'.

Here is the Script :

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 () { Distance = Vector3.Distance(Target.position, transform.position);

 if (Distance < lookAtDistance)
 {
     lookAt();
 }
 
 
 
 if (Distance > lookAtDistance)
 {
     renderer.material.color = Color.green;
 }
 
 if (Distance < attackRange)
 {
     attack();
 }
 
 else if (Distance < chaseRange)
 {
     chase ();
 }

}

function lookAt () { 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 () { 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; }