Problem with blinking!!! Argh

Help!! Argh i'm doing the Walker Boys Lab (mega-nice tutorials by the way, Kudos, to them for that!) But I'm doing the the first lab! And the sphere blinking is driving me crazy!!!

Here is the problem : I'm starting the routine and I got a swicht that toggle on and off depending if it's need to blink or not. But the problem is that this swicth whenever i put it its never swicth back to false! Hope you can help me!

Here is the code :

//Enemy Script</p> <pre><code>//Inspector Variables var shapeColor:Color[]; var numberOfClick:int = 1; var explosion : Transform; var enemyPoint:int = 1; var respawnTime:float; var BlinkToggle:boolean=false; //private Variables private var storeClicks:int = 0; private var rotateSpeed:int=50; function Start() { respawnTime = Random.Range(1.0, 5.0); storeClicks = numberOfClick; var startPosition = Vector3(Random.Range(-6,6), Random.Range(4,-4), 0); transform.position = startPosition; RandomColor(); } function Update () { RotateMe(); if(numberOfClick &lt;= 0) { BlinkingCoroutine(); if(BlinkToggle==true) { BlinkToggle=false; if(explosion) { Instantiate(explosion, transform.position, transform.rotation); } if(audio.clip) { audio.Play(); } var position = Vector3(Random.Range(-6,6), Random.Range(4,-4), 0); RespawnWaitTime(); transform.position = position; numberOfClick = storeClicks; } } } //Change the respawn time function RespawnWaitTime() { renderer.enabled = false; RandomColor(); yield WaitForSeconds(respawnTime); renderer.enabled = true; } //Change the color of Mat when respawning function RandomColor() { if(shapeColor.length &gt; 0) { var newColor = Random.Range(0, shapeColor.length); renderer.material.color = shapeColor[newColor]; } else { print("You've have to set the color array in the inspector"); } } function RotateMe() { transform.RotateAround(Vector3.zero, Vector3(0,0,1), rotateSpeed * Time.deltaTime); } function Blinking() //Do the blinking by turning it on and off; { renderer.enabled = !renderer.enabled; } function EvokeBlinking() //Evoke the Blinking Command each 0.3 sec for 1 sec. { InvokeRepeating("Blinking", 1, .3); } function BlinkingCoroutine() //Start the calling of the coroutine. Call the blinking for 3 sec, then cancel the invoke and turn back the renderer. { EvokeBlinking(); yield WaitForSeconds(3); CancelInvoke("Blinking"); renderer.enabled=true; BlinkToggle=true; }