,      

        "refresh":
        {
            "text" : "",
            "posX" : -154,
            "posY" : 132,
            "width" : 20,
            "height" : 20,
            "texture" : "custommainmenu:textures/gui/buttons.png",
            "action" : 
            {
                "type" : "refresh"
            }
        }