I've created this app that gets the selected fields from the hierarchy and puts it into a selection box named "Generated Field Values".
See if that helps you.
I don't have Sense installed in my machine and couldn't get the example in a QVF but basically what I did was create two variables named:
Variable Name: Expression
ANd inside a listbox use the following expression: =aggr($(vX2),$(vX2))
In that case I get in View the following:
So the "Generated Field Values" is a list box with the top most values of the "hierarchy".
Hope it helps you.
sample.qvw 162.0 K