CheckComboBox help

[ido-amec]

Hi Im trying to to use this for the first time and also new to WPF.

Basically I am binding the ItemsSource value to a list of some class instances I created,
And I for some reason after selecting some options and closing the CheckComboBox, I dont see anything that indicatesmy selections.

The best I could achieve is to show the the path of each option.

Can somebody help me with this please?

xaml:

<xctk:CheckComboBox
    ItemsSource="{Binding ParameterValueList}"
    Delimiter=", "
    Width="200"
    SelectedItemsOverride="{Binding SelectedFilterParameters}"
    DisplayMemberPath="ValueToString"
    ValueMemberPath="ValueToString"
     >
    <xctk:CheckComboBox.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding ValueToString}"/>
        </DataTemplate>
    </xctk:CheckComboBox.ItemTemplate>
</xctk:CheckComboBox>