Look up .key

[lithium]

I am using a treeview that I have populating four total nodes deep. I want to be able to display related data if the user clicks the very last child node (basically show which parent is that nodes parent all the way up the tree). How would I be able to look up the data that was assigned to the .key function? Essentially each top parent node starts with a1, then goes to a2 for the next parent, and the child to a1 is b1 and it keeps going (to c1 being b1's child)...if they click c1, I want to look up the information in the table that is at b1.

[June7]

Maybe with DLookup() domain aggregate expression?

I've never used treeview. There is a click event? It will pick up the value from the node?

[orange]

I don't know the answer to your question.
See this recent post that was answered by theSmileyCoder who is very knowledgeable of treeviews.
(He also has a series of videos on Youtube specific to treeviews.)
The post and/or the included database may give you some ideas.
Good luck.