GUITexture Show Hide Trouble

Unity Engine
1

Ok right now im working on a simple inventory system. I tryed using a game object attached to the script but that didnt work, so im trying to just make a new GUITexture in a script but now the damn thing wont show up. Heres what i got.

public class InventoryBag : MonoBehaviour 
{
	public Texture BagText;
	private GUITexture BagFrame;
	public bool ShowIn;
	// Use this for initialization
	void Start () 
	{
		BagFrame = new GUITexture();
		BagFrame.transform.position = Vector3.zero;
		BagFrame.transform.localScale = Vector3.zero;
		BagFrame.pixelInset = new Rect(300f, -228f, 164f, 205f);
		BagFrame.texture = BagText;
	}
	
	// Update is called once per frame
	void Update () 
	{
		if(Input.GetButton("ShowInv"))
		{
			if(BagFrame.enabled = false)
			{
				BagFrame.enabled = true;
			}
			if(BagFrame.enabled = true)
			{
				BagFrame.enabled = false;
			}
		}
	}
}

I get a NullReferenceException.

2

i think error is in update,u have to use else:

public class InventoryBag : MonoBehaviour 
{ 
   public Texture BagText; 
   private GUITexture BagFrame; 
   public bool ShowIn; 
   // Use this for initialization 
   void Start () 
   { 
      BagFrame = new GUITexture(); 
      BagFrame.transform.position = Vector3.zero; 
      BagFrame.transform.localScale = Vector3.zero; 
      BagFrame.pixelInset = new Rect(300f, -228f, 164f, 205f); 
      BagFrame.texture = BagText; 
   } 
    
   // Update is called once per frame 
   void Update () 
   { 
      if(Input.GetButton("ShowInv")) 
      { 
         if(BagFrame.enabled = false) 
         { 
            BagFrame.enabled = true; 
         } 
         else 
         { 
            BagFrame.enabled = false; 
         } 
      } 
   } 
}
3

thanks its working now.