[logback-user] Problem in FileAppender 'append' flag

Hey, I'm creating a log with FileAppender to my application programmatically, and I set the append flag to false, but it keeps append the logging in the same file, instead of reseting the file. The code is in https://gist.github.com/pedrorijo91/6ce3e8f9144302ef4bc1 What may be the problem? How can I reset the log file in every application execution ? Note: the method is used by several classes, the idea is that every class logs into that file, and in another application run the file be reseted. -- Kind Regards, Pedro Rijo