Centering a GUI Button/Box's alignment?

Unity Engine
1

I’m trying to make a shrinking GUI.Box/button

my problem is my GUI.Box doesn’t shrink/scale to it’s center… instead it shrink to its top left corner.
any idea how to align a GUIBox so it’ll scale/shrink in it’s center??

what I meant by center is not center of the screen,
the GUI position fixed with a gameObject,

I’m confused to explain this myself, so I’ll explain with a picture:

btw, thanks in advance :slight_smile:

'n here’s the script:

#pragma strict

var ButtonScale = 0.0;
var Skin : GUISkin;
var failSkin : GUISkin;     
var levelManager : LevelManager;
var IsActive=true;
var Counter=0;
var fail=false;

function Awake  () {


}



function OnGUI () {
if (fail==false)

	
 	{GUI.skin = Skin;}

 else
if (fail==true)
  {GUI.skin = failSkin;}
 
var screenPos = Camera.main.WorldToScreenPoint (transform.position);
if (IsActive==true)
{GUI.Box(Rect (screenPos.x,Screen.height-Camera.main.WorldToScreenPoint (renderer.bounds.max).y,250-ButtonScale,250-ButtonScale), " "); 

		if (GUI.Button (Rect (screenPos.x,Screen.height-Camera.main.WorldToScreenPoint (renderer.bounds.max).y,250,250), " ")) 
		{		
		if (fail==false){		
				IsActive=false;
				Counter=0;
				}
		}
		
		
}		
}


function Update () {
var cSpeed=levelManager.counterSpeed;
var sSpeed=levelManager.ButtonScaleSpeed;

if (IsActive==true){ 
      ButtonScale += (Time.deltaTime * sSpeed);
      Counter += cSpeed;
      }
      
      if (Counter >=70)
{
fail=true;
levelManager.fail();}
}
2

I am not a godo programmer but, maybe you could try something like:

In the width and height position, ask your code to move the texture depending on your texture size.
Ok, I cant explain very well. Its something like
position= 5screen.width/2-texture.width/2)

Do you get what I mean?