Nesting asset listings into Type Formats of Funnelback OEM search

I'm trying to nest an asset listing into the Type Format of a Funnelback OEM search. i.e. for each result listed, I want to use the current result as the root node for the asset listing.


This is similar in functionality to using the list_current_asset_id session variable when nesting an asset listing inside a regular asset listing / Matrix search page type format.



In the Funnelback OEM type format, I'm able to print the %result_meta_U% keyword which gives me the current result's asset id. However, I've been unsuccessful in using this keyword to supply the nested asset listing a root node to use.



What I want to do with the asset listing is to go one level up the tree to get details about the result's parent asset.



Cheers!