WPF Toolkit Charting and IndependentValueBinding, IndependentValuePath

I'm facing a problem with the charting engine from the WPF toolkit.

I haven't moved the data to a proper object model, so the ItemSource is backed with a DataView.

First attempt

<chartingToolkit:ScatterSeries x:Name="TargetSeries" 
  DataPointStyle="{StaticResource TargetStyle}"  
  ItemsSource="{Binding Path=TargetSeriesData}"
  IndependentValueBinding="{Binding Path=TargetSeries_X}" 
  DependentValueBinding="{Binding Path=TargetSeries_X}" />

This crashes because I believe the bindings are considered as the values to the plot or some sort of mismatch.

Second attempt

<chartingToolkit:ScatterSeries x:Name="TargetSeries" 
  DataPointStyle="{StaticResource TargetStyle}" 
  ItemsSource="{Binding Path=TargetSeriesData}"
  IndependentValuePath="{Binding Path=TargetSeries_X}"
  DependentValuePath="{Binding Path=TargetSeries_X}" />

This crash happens during the initialization step because the Path properties aren't backed with dependency properties and therefore cannot be bound.

Third attempt

<chartingToolkit:ScatterSeries x:Name="TargetSeries" 
  DataPointStyle="{StaticResource TargetStyle}"  
  ItemsSource="{Binding Path=TargetSeriesData}"
  IndependentValuePath="targetFooXColumnName" 
  DependentValuePath="targetFooYColumnName" />

Now this works! But I wanted to use the binding so I can switch from using the targetFooXColumnName to the targetFooBarXColumnName. So this solution will cause a whole lot of hacky looking code to switch the Path manually.

Is there a way to fix this? Can I use some sort of converter to get the Binding properties to correctly pull the data from the columns in the DataView?

Thanks, Joel