[syslog-ng] How to build a filter where one message from one host not logged

Hi ! I want to filter with syslog-ng that a message from a special host with a special message was not filtered and everything else goes to the logfile filter f_cisco_switches_knownerrors1 { host ("hostxy") and match("ENVIRONMENT-3-RPS_FAILED"); }; The Log-Message : Mar 29 12:29:19 hostxy err 20979: Mar 29 12:29:18: %ENVIRONMENT-3-RPS_FAILED: Faulty internal power supply detected Thanks, Niels