parameter 'idle' does not exist. unityengine.animator:setbool(string,boolean)

my ennemy ia Javascript


var target : Transform; //the enemy's target
var moveSpeed = 3; //move speed
var rotationSpeed = 3; //speed of turning
var distance ;
var myAnimation : Animator;

var myTransform : Transform; //current transform data of this enemy

function Awake()
{
myTransform = transform; //cache transform data for easy access/preformance
}

function Start()
{

}

function Update () {


distance =Vector3.Distance(target.position, transform.position);

if(distance < 10)
{ myAnimation.SetBool("Idle" , true );



//rotate to look at the player
myTransform.rotation = Quaternion.Slerp(myTransform.rotation,
Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);



//move towards the player
myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
}

if(distance > 10)
{myAnimation.SetBool("walking_3" , false);
}
}