Not summing variables corectly

My problem is that new XElement("playerWin", (int)winTemp + playerWin), is not properly summing the values correctly. If I do it outside of XElement, like the commented lines in saveXML(), it works as intended. Why?

public void saveXML()
    {
        if (File.Exists(path))
        {
            readXML();
            File.Delete(path);
            //playerWin = (int)winTemp;
            //playerLoss = (int)lossTemp;
            //playerTie = (int)tieTemp;
            createFile();
        }
        else
        {
            createFile();                
        }        
    }

    public void createFile()
    {
            XDeclaration _obj = new XDeclaration("1.0", "utf-8", "");
            XNamespace gameSaves = "gameSaves";
            XElement fileNew = new XElement("Root",
                                new XElement("Player",
                                    new XElement("playerName", playerName),
                                    new XElement("Stats",
                                        new XElement("playerWin", (int)winTemp + playerWin),
                                        new XElement("playerLoss", (int)lossTemp + playerLoss),
                                        new XElement("playerTie", (int)tieTemp + playerTie))));


            fileNew.Save(path);
            Console.WriteLine("Save created: " + path);
    }