[logback-user] parameter { } substitution is not happening with our custom appender

Hi Logback community, We created a custom appender to send logging data to our own storage medium. It extends AppenderBase<ILoggingEvent> like the docs say, but for some reason, any logging statements where we use the logback parameter substitution (i.e. "message with parameter {}", param1), there is no substitution. We have our custom appender AND a FileAppender. The fileappender has the parameter substituted, but the custom one does not. If anyone has any suggestions, I would greatly appreciate. Thanks, Bob DeRemer Senior Director, Architecture and Development <http://www.burningskysoftware.com/> http://www.burningskysoftware.com O: 717.505.7923 M: 717.881.3986