public void ChangeCategory(GameObject button)
    {
        Buttonbtn highlightableButton = button.GetComponent <Buttonbtn>();

        scrollRect.content = highlightableButton.optionList.GetComponent <RectTransform>();
        highlightableButton.Click();
        activeButton.Click();
        activeButton = highlightableButton;
    }
 void Start()
 {
     inventoryItems = Resources.LoadAll <Inventory>("ItemObjects");
     FullItemList   = ItemObtainFromDatabase();
     CreateItem();
     if (FullItemList.Count > 0)
     {
         ShowItemInfo(FullItemList[0]);
     }
     ItemInfoSetup();
     activeButton = OptionBtnGO[0].GetComponent <Buttonbtn>();
     activeButton.Click();
 }