Setting up custom sonar rule for Annotations

Hello @Quentin I have build my project around your suggestions, but I’m currently struggeling at a key point and were out of ideas now.
using valuesForAnnotation("org.springframework.transaction.annotation.Transactional") always results in returning null. After checking several classes like SpringIncompatibleTransactionalCheck which uses the same annotation.
I even copied the code in there but for all I get for the methodsPropagationMap is the methodName and null.
Where is the magical difference that my project doesn’t know @Transactional but everything else does?

Thank you once again in advance!