public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            object valueToConvert = value;

            // convert if required
            if (_valueConverter != null)
            {
                valueToConvert = _valueConverter.ConvertBack(valueToConvert, targetType, parameter, culture);
            }

            // inform the bound Row instance of the property value change
            return(new FieldSetter(parameter as string, valueToConvert));
        }