public void ValueChanged(object sender, Autodesk.Revit.UI.ExtensibleStorage.Framework.ValueChangedEventArgs e)
        {
            switch ((e as Autodesk.Revit.UI.ExtensibleStorage.Framework.ValueChangedEventArgs).FieldName)
            {
            case "Material":
                onMaterialComboChange(e);
                break;

            case "RebarBarType":
                onBarChange(e);
                break;
            }
        }
 public void ValueChanged(object sender, Autodesk.Revit.UI.ExtensibleStorage.Framework.ValueChangedEventArgs e)
 {
     onChange(e);
 }