public void Save()
        {
            FastTrackPage page = this.Page as FastTrackPage;

            if (page != null)
            {
                PropertyInfo property = page.GetPropertyInfo(propertyName);
                if (property != null)
                {
                    if (page.IsReadOnlyProperty(property.Name))
                    {
                        return;
                    }
                }

                page.SetPropertyNullStatus(propertyName, this.Checked);
            }
        }