Where to resolve an XPath query?

[wi...@digitalsteps.com]

Can someone point me in the right direction, what I want to do is have a 
user select a row in a table row and to then display all relevant xml data 
in a subsequent view page. Once I've got the row id selected where does 
the XPath query go to handle returning the correct element data to the 
view page? Within a binding document I've tried to bind output fields to a 
dynamic XPath query using a JXTemplate expression but this doesn't work. 
Is this the correct approach or should I be resolving the XPath within the 
flowscript somehow?

Thanks

Will