[logback-user] appender file name using name of warfile directory

Hi, just a quick question. let s assume I ve got a warfile application1 installed to tomcats webapps dir. Do I have the possiblilty to do the following in my appender, without defining any properties of my own? <file>${catalina.base}/logs/${somehow find out that it is application1 running}.log Basically, if there is a property like catalina.base, which gives me the of the dir in webapps directory? Thanks a lot in adance. -- Volker