Bidirectional binding with ObjectBinding in JavaFX

I have a simple bean that has some properties related with each other. For example, this bean has a property called discountRate and another called discountValue. The discountRate is the percentage (%) of discount applied to a sale. The discountValue is the value($) of discount applied to a sale. As the user can inform either the percentage or the value and I need store the two values in the database, a JavaFX bidirectional binding would solve the problem, however, as you can imagine, these values are correlated but aren't the same. I tried solve this problem creating bindings in the two sides:

public class ExampleBean{

    private ObjectProperty<BigDecimal> discountValue;
    private ObjectProperty<BigDecimal> discountRate;

    public BigDecimal getDiscountvalue() {
        return discountValueProperty().getValue();
    }

    public void setDiscountValue(BigDecimal discountvalue) {
        this.discountValueProperty().set(discountvalue);
    }

    public ObjectProperty<BigDecimal> discountValueProperty() {
        if(discountValue==null){
            discountValue=new SimpleObjectProperty<BigDecimal>(new BigDecimal("0.00"));
            discountRate=new SimpleObjectProperty<BigDecimal>(new BigDecimal("0.00"));
            configureDiscountBinding();
        }
        return discountValue;
    }

    private void configureDiscountBinding(){
        discountValue.bind(Bindings.createObjectBinding(new Callable<BigDecimal>() {
            @Override
            public BigDecimal call() throws Exception {
                return getDiscountRate().multiply(getTotalValue()).divide(new BigDecimal("100"));
            }
        }, discountRateProperty()));
        discountRate.bind(Bindings.createObjectBinding(new Callable<BigDecimal>() {
            @Override
            public BigDecimal call() throws Exception {
                return getDiscountValue().multiply(new BigDecimal("100")).divide(getTotalValue());
            }
        }, discountValueProperty()));
    }

    public BigDecimal getDiscountRate() {
        return discountRateProperty().getValue();
    }

    public void setDiscountRate(BigDecimal discountRate) {
        this.discountRateProperty().set(discountRate);
    }

    public ObjectProperty<BigDecimal> discountRateProperty() {
        if(discountRate==null){
            discountRate=new SimpleObjectProperty<BigDecimal>(new BigDecimal("0.00"));
            discountValue=new SimpleObjectProperty<BigDecimal>(new BigDecimal("0.00"));
            configureDiscountBinding();
        }
        return discountRate;
    }
}

As you could see, I'm trying calculate the percentage when the value is setted, and calculate the value when the rate is setted. The binding I tried above can't be bound, as this will enter in a eternal loop. Is there a way I can do a binding to solve this problem, or I need do the calculation inside setters?