[na-tt]

I have a user defined column called "Genre" under preferences > look & feel > Tag browser i have specified that Genre is a Category with Hierarchical items.

when you browse in the tag browser and click on a genre, for example, Nonfiction.Computer Science it shows a green plus sign and the search bar shows #genre:"=Nonfiction.Computer Science" and it only shows books with the exact Genre and not those that have a sub-genre like Nonfiction.Computer Science.Machine Learning.

In order to show all books belonging to a genre including those in sub-genres i have to click again, then the green plus sign changes to two green plus signs and the search bar shows #genre:"=.Nonfiction.Computer Science".

I wish to change the behavior of the tag browser such that when clicking on a Genre the first search filter applied is the two green plus signs and on a second click go to the single plus sign.

is this possible and how can i go about doing this?

Many thanks in advance.