The "Show a screen to a player" appears to be working for all types (Items, Locations, Tasks, Main, Inventory).
There seems to be a bug with "Show a detail screen to the player". It doesn't fire, at least not in the emulator. It works successfully for displaying specific Tasks and Items but not for Zones and Characters.
I have been working all morning trying to get it to work. Please enlighten me if I am wrong.
Thanks so much for this wonderful idea!