Hope this helps. :)
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
<TextBlock Text="{Binding Value}">
<i:Interaction.Triggers>
<ei:DataTrigger Value="0" Binding="{Binding Text, ElementName=Self}">
<im:ChangePropertyAction PropertyName="Text"
Value="Open"/>
</ei:DataTrigger>
<ei:DataTrigger Value="1" Binding="{Binding Text, ElementName=Self}">
<im:ChangePropertyAction PropertyName="Text"
Value="Close"/>
</ei:DataTrigger>
</i:Interaction.Triggers>
</TextBlock>