[syslog-ng] More then one application running on same server

Hi, Thank you very much for your reply. But as I am new in this so can you please be more specific that how can I use the Program() filter?? Let me again tell you my specific issue- I have a Tomcat server running and in that server I have 3 application or nodes that generates the logs and dump into tomcat server....Now when I use the syslog it gives me all the logs mix with the generating source name as the hostname (tomcat server)....but I want that syslog should give me the logs which has the field in it from which I can identify that this log is generated in this application and this is in other... So I hope I describe the problem to give you exact idea!! I will be thankful to you if you help me in this. B.R. Ash