help me to connect ibatis to one jndi name (connection pool)

[Dionisio Egiluz Ruiz de Zárate]

i am ttring to configure ibatis for using one connection pool configured 
into my websphere
i have one jndi name (jdbc/dsDIT) and for connect i have into the ibatins 
conf file (SqlMapConfig.xml) this:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMapConfig
PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN"
"http://www.ibatis.com/dtd/sql-map-config-2.dtd";>
<sqlMapConfig>
<typeAlias alias="order" type="testdomain.Order" />
<transactionManager type="JDBC">
 <dataSource type="JNDI">
  <property name="DataSource" value="java:comp/env/jdbc/jdbc/dsDIT" />
 </dataSource>
</transactionManager>
<sqlMap resource="DITT01CATEGORIAS.xml"/>
</sqlMapConfig>

but when i test the conection i recibed one exception (initial context 
exception).
i think that it doesn't find the jndi name but i have configure it.

Can you help me?

thanks