@Override
    public void updatePortfolio(Contract contract, double position, double marketPrice, double marketValue, double averageCost, double unrealizedPNL, double realizedPNL, String accountName) {
    DecimalFormat df = new DecimalFormat("0.0000"); // TODO get digit according
        df.setDecimalSeparatorAlwaysShown(true);
        String formatedPosition = df.format(position);
        formatedPosition = formatedPosition.replace(",", ".");

        System.out.println("contract = " + contract.localSymbol() + ", contract.description() = " + contract.description() + ", unrealizedPNL = " + unrealizedPNL + ", formatedPosition = " + formatedPosition);

    }