Hi there. I want to set the filename of the file in the appender dynamic constructed by conversionRule (ClassicConverter). Because the filename is depending the %logger. Converter: if (event.getLoggerName().contains(NEGOCIO)) { StackTraceElement st= event.getCallerData()[0]; filename = st.getClassName(); filename = filename.substring(NEGOCIO.length()); int endIndex = filename.indexOf("."); filename = filename.substring(0, endIndex); } else { filename = event.getLoggerName(); int endIndex = filename.indexOf("."); filename = filename.substring(0, endIndex); } return filename; But the ConversionRule only work for the encoder pattern tag. So how to make it work for file tag and the fileNamePattern tag. I allready try with property but don't work. ------------------------------------- Marco Sousa