Need help to extract values using patterndb #5460

<patterndb version="5" pub_date="2025-04-09">
  <ruleset name="unit" id="nginx-unit-ruleset">
    <description>
      This ruleset covers PHP error messages generated by nginx-unit.
    </description>
    <rules>
      <rule provider="nginx-unit" id="nginx-unit-php-error" class="system">
        <patterns>
          <pattern>@ESTRING:LOG_DATE: @@ESTRING:LOG_TIME: @[@ESTRING:UNIT_SEVERITY:]@ @ANYSTRING:LOG_MESSAGE@ </pattern>
        </patterns>
      </rule>
    </rules>
  </ruleset>
</patterndb>

pdbtool match -M "2025/04/09 14:24:07 [notice] 2576821#2576821 [unit] #77: php message: PHP Fatal error:  Uncaught Error: Call to undefined function test_error() in /usr/local/www/App/test_error.php:8" -p /etc/syslog-ng/patterndb.d/pattern2.xml -c -D -v

Module loaded and initialized successfully; module='syslogformat'
Module loaded and initialized successfully; module='basicfuncs'
Pattern matching part:
@ESTRING:LOG_DATE=2025/04/09@@ESTRING:LOG_TIME=14:24:07@[@ESTRING:UNIT_SEVERITY=notice@ @ANYSTRING:LOG_MESSAGE=2576821#2576821 [unit] #77: php message: PHP Fatal error:  Uncaught Error: Call to undefined function test_error() in /usr/local/www/App/test_error.php:8@
Matching part:
2025/04/09 14:24:07 [notice] 2576821#2576821 [unit] #77: php message: PHP Fatal error:  Uncaught Error: Call to undefined function test_error() in /usr/local/www/App/test_error.php:8
Values:
MESSAGE=2025/04/09 14:24:07 [notice] 2576821#2576821 [unit] #77: php message: PHP Fatal error:  Uncaught Error: Call to undefined function test_error() in /usr/local/www/App/test_error.php:8
.classifier.class=unknown
TAGS=.classifier.unknown

pdbtool dictionary --pdb patterndb.d/pattern2.xml
LOG_DATE
LOG_TIME
UNIT_SEVERITY
LOG_MESSAGE