https://bugs.winehq.org/show_bug.cgi?id=48381
--- Comment #9 from Zebediah Figura z.figura12@gmail.com --- Thanks, but that's not quite right. You need to use commas between the channels, otherwise it won't work, and you also need to put the environment variable on the same line, e.g. "WINEDEBUG=+channel1,+channel2,+channel3 wine app.exe".