How to configure syslog-ng to support multiple files per syslog source?

[GeorgPeters]

Hi,

I installed the syslog-ng package and got it running with default parameters. But now I like store the logdata of each source (by IP address) in a separate file.

I found a hint in the syslog-ng documentation version 3.8 page 37
https://www.balabit.com/support/documentation

–quote--
If you want to create separate log files for every client host, use the ${HOST} macro when specifying the filename, for example:
destination d_local { file("/var/log/messages_${HOST}"); };
--quote--

How can this be done with the webinterface of syslog-ng in pfSense?

Best regards

Georg