How to filter dropdown items in WPF editable ComboBoxAdv?

<Grid>
    <syncfusion:ComboBoxAdv x:Name="comboBoxAdv" HorizontalAlignment="Center" VerticalAlignment="Center" Width="200" Height="25" ItemsSource="{Binding List}" DisplayMemberPath="Name" IsEditable="True">
        <i:Interaction.Triggers>
            <i:EventTrigger EventName="KeyUp">
                <local:FilterAction/>
            </i:EventTrigger>
        </i:Interaction.Triggers>
    </syncfusion:ComboBoxAdv>
</Grid>

public class FilterAction : TargetedTriggerAction<ComboBoxAdv>
{
    protected override void Invoke(object parameter)
    {
        CollectionView items = (CollectionView)CollectionViewSource.GetDefaultView(Target.ItemsSource);
        items.Filter = ((o) =>
        {
            if (String.IsNullOrEmpty(Target.Text))
                return true;
            else
            {
                if ((o as Model).Name.Contains(Target.Text))
                    return true;
                else
                    return false;
            }
        });
        items.Refresh();
    }
}