void btnCaptureScreen()
 {
     if (GUI.Button(new Rect((Screen.width / 5f) * 3 + 10, 10, (Screen.width / 5f) - 20, (Screen.width / 5f) - 20), texScreenshot, "")) //if button Screenshot is press
     {
         //Clear screen when function Capture Screen excute
         GlobalVariable.Instance.getCapture = true;
         StartCoroutine(ScreenshotManager.Save("MyScreenshot", "PaintAR", true)); //save image capture to gallery
         if (GlobalVariable.Instance.savedCapture)
         {
             AndroidUtil.showToast("Saved image to gallery.");                                       //push toast to scene
         }
     }
 }