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I had to use to JPAKnowledgeService ans store the session id elsewhere.

EntityManagerFactory emf = Persistence.createEntityManagerFactory("com.test");

           Environment env = KnowledgeBaseFactory.newEnvironment();

            env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, emf);

            env.set(EnvironmentName.TRANSACTION_MANAGER, TransactionManagerServices.getTransactionManager());

            ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(sessionId, kbase, null, env);