[rules-users] How to store the rules data into RDBMS, like mysql, oracle

Hi,all: Guvnor is a BRMS,it can manage the rules through Jackrabbit Repository.The default,Guvnor work well with derby database.But i want it work with my database,just like MySQL. My step is : 1.Run Guvnor with default,and generate the repository.xml and repository dictionary at JBOSS_HOME\bin dictionary 2.delete repository dictionary and edit repository.xml,only replace the content in <PersistenceManage> label ,just like this: <PersistenceManager class="org.apache.jackrabbit.core.state.db.SimpleDbPersistenceManager"> <param name="driver" value="com.mysql.jdbc.Driver"/> <param name="url" value="jdbc:mysql://localhost:3306/guvnor_db"/> <param name="user" value="root" /> <param name="password" value="a123456" /> <param name="schema" value="mysql"/> <param name="schemaObjectPrefix" value="${wsp.name}_"/> <param name="externalBLOBs" value="false"/> </PersistenceManager> 3.install Mysql database,and create the guvnor_db database instance,and copy mysql driver to JBOSS_HOME\server\deploy\lib 4.Restart the JBoss ,i get the exception: org.drools.repository.RulesRepositoryException: javax.jcr.RepositoryException: Invalid repository configuration: repository.xml: Replacement not found for ${wsp.name}.: Replacement not found for ${wsp.name}. Why?Please help me,thanks!