Use host IP (or dns) in the output file path

Elastic Stack Logstash
1

Hello to everyone!
My question looks like obvious, but I missed something basic and stuck =)

I have a UDP input that I want to output as a file
My desired output file path is:
E:/logstash/log/$host_ip$/$date$.log

It seems that pipeline conf must look ilke this:

output {
    file {
        path => "E:/logstash/log/$host_ip$/%{+YYYY-MM-dd-HH}.log"
    }
}

So, the question is how to reference a host ip?

This is an example of the event:

{"host":{"ip":"172.22.255.5"},"event":{"original":"<166>Nov 22 2024 13:06:46 0.0.0.0 : %ASA-6-305012: Teardown dynamic TCP translation from inside:172.29.90.17/45992 to outside:1.2.3.4/45992 duration 0:00:03\n"},"@timestamp":"2024-11-22T10:06:46.866042800Z","message":"<166>Nov 22 2024 13:06:46 0.0.0.0 : %ASA-6-305012: Teardown dynamic TCP translation from inside:172.29.90.17/45992 to outside:1.2.3.4/45992 duration 0:00:03\n","@version":"1"}

I tried to use different references in the output config but didn't find a solution
Tried this:
E:/logstash/log/%{host}/%{+YYYY-MM-dd-HH}.log
E:/logstash/log/%{host.ip}/%{+YYYY-MM-dd-HH}.log
E:/logstash/log/%[host][ip]/%{+YYYY-MM-dd-HH}.log

2

try:
E:/logstash/log/%{[host][ip]}/%{+YYYY-MM-dd-HH}.log

3

It works! Thank you
I was pretty near =)