Using Spawn and Despawn on GUI items

I am using Floating or Overlay Text that Displays Points on Items collected or Enemies destroyed directly on the Game Objects on the screen. 

I am currently using Instantiate and Destroy on them because I do not know how to use Core Gamekit to  spawn and despawn GUI Items.  

My code with the Instantiate is below. I am going to paste all the code so it makes more sense to you.  You can tell all my failed attempts in grey.


I will post the code that has the Destroy Code in it following trying to figure this out.

Thanks For any help you can give.

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public class FloatingTextController: MonoBehaviour {



private static FloatingText popupText;

private static GameObject canvas;



FloatingText myFloatingText;



public static void Intialize()

{


canvas = GameObject.Find ("CanvasPopup"); // set as tag in future

popupText = Resources.Load<FloatingText>("TextPrefab/PopUpTextParent");



}



public static void CreateFloatingText(string text, Transform transform)

{


print ("RUN FLOATING TEXT CONTROLLER FUNCTION");



Vector2 screenPosition = Camera.main.WorldToScreenPoint (transform.position);



FloatingText instance = Instantiate (popupText);



//FloatingText instance = PoolBoss.SpawnInPool(popupText);



//FloatingText instance = PoolBoss.SpawnInPool(popupText, screenPosition).FloatingText as FloatingText;

// newItem = DarkTonic.CoreGameKit.PoolBoss.SpawnInPool (spawnPlatform.transform, spawnPlatform.transform.position, spawnPlatform.transform.rotation);

//Vector2 screenPosition = Camera.main.WorldToScreenPoint (new Vector2(transform.position.x,transform.position.y));

// new Vector2(transform.position.x - 45, 0);



instance.transform.SetParent (canvas.transform, false);

instance.transform.position = screenPosition;

instance.SetText(text);

    }

}