When you say "does not work" do you mean that when clicked while it is pointing up it does not move at all or that it moves up (which it is supposed to do) but does not display anything?
I just tested it in TRS22PE (I don't have TRS22) and it works initially displaying lots of mysterious "numlights = 2" messages. This worked in Driver when a session had been loaded and when no session had been loaded.