Keep a concrete character regular expressioon

Elastic Stack Logstash
1

i need to keep only two characters of a field but i dont know how to do it.

I would like to keep the second and third character of the server name, which indicates the country code, for example T52EDFS011 (52).
i'm new with regular expressions....

Thanks in advanced!

2

One way it can be achieved in Kibana is by; using static lookup in the field in giving country codes for each value.

3

thank you, finally i can doit with this:

"\S(?.{2}).*"