XmlReader reader = new XmlReader();
    FileHandle handle = Gdx.files.local("data/user.cfg");
      
    if(Gdx.files.local("data/user.cfg").exists()){
     String inputXmlString = new String();
     inputXmlString = handle.readString();
     XmlReader.Element root = reader.parse(inputXmlString);
     Array<XmlReader.Element> elements = root.getChildrenByName("player");
     for(XmlReader.Element child : elements){
      bestScore = Integer.parseInt(child.getChildByName("bestScore").getAttribute("value"));
      globalCoins = Integer.parseInt(child.getChildByName("money").getAttribute("value"));
     }
    }else{
     try {
      handle.file().mkdir();
      handle.file().createNewFile();
     } catch (IOException e) {
      e.printStackTrace();
     }
     bestScore = 0;
    }

StringWriter writer = new StringWriter();
    XmlWriter xml = new XmlWriter(writer);
    try {
     xml.element("data").element("player")
             .element("bestScore")
                     .attribute("value", bestScore)
             .pop()
              .element("money").attribute("value", globalCoins+coins)
             .pop()
        .pop()
        .pop();
       
    } catch (IOException e1) {
     e1.printStackTrace();
    }
    System.out.println(bestScore);
    try{
     FileHandle handle = Gdx.files.local("data/user.cfg");
     handle.writeString(writer.toString(), false);
    } catch(Exception e){System.out.println("error in the end");}