Documentation is not specifying the way you access specific fields.
Assuming Ip and Command are specific fields you extracted,
Just try:
${foreach backlog message}${message.fields.Ip} ${message.fields.Command} - my
version ${end}
--
You received this message because you are subscribed to the Google Groups
"Graylog Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to graylog2+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/graylog2/144442ff-2001-43a9-ad50-027fbd908a18%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
