Java EE (Java Enterprise Edition) General Discussion

I am using JBuilder7 and Weblogic 8.1 to develope EJBs
I did everything in the following steps:
1>>Create an connection factory named MyJMSConnectionFactory under the JMS/connection factories
node in WLS. The jndi name is the same.
2>>create an topic destination named AgentTopic under the JMS/Distributed Destinations node in WLS
the jndi name is the same.
3>>Create my Message-driven Bean in JBuilder,and in the deploy discriptor weblogic-ejb-jar.xml
the relative part follows like this:
<destination-jndi-name>AgentTopic</destination-jndi-name>
<connection-factory-jndi-name>MyJMSConnectionFactory</connection-factory-jndi-name>
4>>but when i deploy this bean,error took place and the message is like this:
[EJB:011010]The JMS destination with the JNDI name: AgentTopic could not be found. Please
ensure that the JNDI name in the weblogic-ejb-jar.xml is correct, and the JMS
destination has been deployed.>
So what mistake did i make?And how to solve this problem? Thanks:)