Binding PropertyGrid at ViewModel class?

...
<gauge:CircularRange StartValue="{Binding AlarmMinWertMin, Mode=TwoWay,    UpdateSourceTrigger=PropertyChanged}"                                                 EndValue="{Binding AlarmMinWertMax, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" 
StartExtent="5" EndExtent="5" HasDropShadow="False"  ScalePlacement="Overlay" x:Name="ALAlarmMin1">
...

    public class ControlViewModel: ViewModelBase
    {
        double _alarmMinWertMin;
        double _alarmMinWertMax;

        ....
        [Category("Grenzwerte")]
        [Description("Min. Alarm min")]
        public double AlarmMinWertMin
        {

            get { 
                   //Get the data from database
                   .....
                   return _alarmMinWertMin;
            }
            set
            {
                ...
                RaisePropertyChanged("AlarmMinWertMin");
            }
        }

        [Category("Grenzwerte")]
        [Description("Min. Alarm max")]
        public double AlarmMinWertMax
        {

            get {
                   //Get the data from database
                   .....
                   return _alarmMinWertMax; 
            }
            set
            {
                 ...
                RaisePropertyChanged("AlarmMinWertMax");
            }
        }
}

IPropertyDataAccessor propertyDataAccessor = ... ;

PropertyDescriptorDataAccessor propertyDescriptorDataAccessor = propertyDataAccessor as PropertyDescriptorDataAccessor;
if (propertyDescriptorDataAccessor == null) {
    PropertyGridDataAccessorItem item = propertyDataAccessor as PropertyGridDataAccessorItem;
    if (item != null)
        propertyDescriptorDataAccessor = item.DataContext as PropertyDescriptorDataAccessor;
}

if (propertyDataAccessor != null && propertyDataAccessor.PropertyDescriptor != null) {
    // Determine if the dependency property in the object is data bound
    DependencyObject depObj = propertyDataAccessor.Target as DependencyObject;
    DependencyPropertyDescriptor depProp = DependencyPropertyDescriptor.FromProperty(propertyDataAccessor.PropertyDescriptor);
    if (depObj != null && depProp != null) {
        BindingExpression bindingExpression = BindingOperations.GetBindingExpression(depObj, depProp.DependencyProperty);
        // TODO: Check for View Model in DataItem property
    }
}