I'm trying to create a new field which value must be the length of the string of another field.
I have found an advice using ruby code, like this:
// code => "event.set['http_user_agent_length'] = event.get['http_user_agent'].length"
the type of "http_user_agent" is string.
When I execute this code, I receive this message:
[ERROR] 2018-09-20 08:19:13.047 [Ruby-0-Thread-7: :1] ruby - Ruby exception occurred: wrong number of arguments calling
set (0 for 2)
Anyone know the issue or other way to obtain the length of a field?