Is your requirement is to show the content of a selected row in a review harness ? If not , could you help us by providing screenshots of what you have implemented and also some more information about your requirement.
If your requirement is just to show the data in review mode. I believe your can go by sourcing the Datapage to a Table layout and from the Operations tab, Use row editing --> Master-Detail . So that you can show the data in custom section as you needed.