[logback-user] default delimiter for MDC?

Hi, I've been trying to use the new feature of the MDC without any luck.. it's probably a silly question, but can someone please post exact format for it? I've tried it without any luck... from what I've seen in the examples it seems like %X{req.xForwardedFor:-NONE} should work.. but for me it keeps on saying: ScanException: Expecting } under Parser.expectCurlyRight version is 1.0.12 with slf4j 1.7.5 Help is much appreciated ;) -- Cheers, Yoni