How to edit my rex statement to extract the name out of this example string?

[packet_hunter]

I am trying to rex out a person name out of the following....

.... @ xyz-2\\\\johndoe&........

Here is my current search:

sourcetype=A_cef_syslog category="ThisONe" | rex field=ThatONe "\@(?[\w+\d\-\\ ]+) " | stats list(person)

Ideally I would like the match to start with @ and stop at &...

Any help is much appreciated,

thank you!!!

[sundareshr · Accepted solution]

Try this

... | rex field=ThatONe "@(?<name>[^\&]+)" | ...

[packet_hunter]

Thank you!!!

Lately I have been using online regex tester to test my rex code but apparently what works in the online tester doesn't always work... any other testing suggestions other than the obvious- "RTFM again" (which I am going to do)?