It might not be immediately obvious, but let's think about it:
If you're getting an error when the condition fails, it means the error is in the function that's being called when the condition fails. You don't have that. Try adding `nil` as the last argument in `QBox`.
The error is gone! Thank you very much 
It's strange; I based it on a `QB` from a developer map with Frida, where she's asked whether to pass through the dwarf garrison. I also looked through the ToE maps, and in the very first map of the campaign, there's also a `QB` without an argument for the failure condition. Or maybe the game is complaining about the third argument because I'm using a variable-transmitter in the text file ``?
