How to extract fields from regex and put in a table

[splunkuser2127]

My current search is:

index=rtm* source=/prod/msp/logs/private-auto-loan-credit* | regex "The rule (?<field1>[a-zA-Z0-9]+_[a-zA-Z0-9]+)_(?<field2>[a-zA-Z0-9]+) with" | table field1, field2

In verbose mode, it finds the correct entries, but my table is full of nulls. What am I doing wrong? 

[isoutamo]

Hi

can you share example events so the community could help you. 
You should change regex to rex and try again. 
r. Ismo