How to log from bpmn2 file using sl4j logger in Spring Boot?

I have just upgraded my drools application from spring framework to spring boot. However, after upgrading to spring boot my logging have failed to work. All other logging tends to work.

Inside bpmn2 file, I have LoggerFactory.getLogger("ClaimHistoryCompatabilitySearch");

Inside logback.xml, I have `

<logger name="org.kie" level="debug"/>
    <logger name="org.drools" level="debug"/>

<root level="debug">
<appender-ref ref="Console" />
</root>
</configuration>

`

Inside build.gradle, I am having sl4j-api, logback-classic.

Any inputs?