I followed the example on the bonita documentation about creating an event handler (c.f. documentation )
The only thing I did differently is the configuration of the server, I used the setup.bat (pull and push) to register my event handler (push the bonita-tenant-sp-custom.xml). Then I restart the server via the Studio.
The thing is that nothing appear in the logs as shown in the example.
I am using the default h2 database, with a 7.6.3 bonita SP version.