Question : UltraTree and Filtering ?

Using vb.net & Untral Tree.
I am using a bound UltraTree to display Invoice Headers (parent) and Invoice Lines (children).
But now I want the ability to filter. Usually I would do this by binding to a BindingSource rather than a Dataset, and using the Binding Source .Filter method.
Is there away to bind the UltraTree to a BindingSource?
If not, does it have some other way that I can filter?

Answer : UltraTree and Filtering ?

Have a look at chapter 4 from this link for Ultra Tree binding example:
         http://documentation.progress.com/output/OpenEdge102b/pdfs/gsvis/gsvis.pdf