JTA Transactions Spring, Hibernate in WebSphere

Hi,
I am using Spring, Hibernate and Websphere for an application. I want to use JTA Transaction.
All my transactions are rolled back, I am getting this message - WLTC0032W: One or more local transaction resources were rolled back during the cleanup of a LocalTransactionContainment. I think that Hibernate is starting its own transactions and they are rolled back by Websphere Global Transactions. How do I make Hibernate use Websphere JTA Transactions?
I tried several combinations but I think I am missing something.

Any help would be greatly appreciated.

Configuration is as follows -

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
" http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="ccmDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="ccmds"/>
</bean>
<bean id="mySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="ccmDataSource"/>
<property name="mappingResources">
<list>
<value>/web-inf/mapping/Sections.hbm.xml</value>
</list>
</property>

<property name="hibernateProperties">
<value>
org.hibernate.dialect.OracleDialect
</value>
</property>
<!--
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</prop>
<prop key="hibernate.transaction.factory_class">org.hibernate.transaction.CMTTransactionFactory</prop>
<prop key="hibernate.transaction.manager_lookup">org.hibernate.transaction.WebspherExtendedJTATransactionLookup</prop>
<prop key="hibernate.transaction.flush_before_completion">true</prop>
<prop key="hibernate.transaction.auto_close_session">true</prop>
</props>
</property>
-->
</bean>

<bean id="myTxManager" class="org.springframework.transaction.jta.JtaTransactionManager"/>


<!--
<bean id="wsJta" class="org.springframework.transaction.jta.WebSphereTransactionManagerFactoryBean"/>

<bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager" >
<property name="userTransactionName"><null /></property>
<property name="transactionManager" ref="wsJta" />
</bean>
-->

<bean id="templateDesignDAO" class="com.ubs.ccm.dao.TemplateDesignDAOImpl">
<property name="sessionFactory" ref="mySessionFactory"/>
</bean>


<bean id="templateDesignService" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="proxyInterfaces">
<list>
<value>
com.ubs.ccm.dao.TemplateDesignDAO
</value>
</list>
</property>
<property name="target">
<ref bean="templateDesignDAO"/>
</property>
<property name="transactionManager">
<ref bean="myTxManager"/>
</property>
<property name="transactionAttributes">
<props>
<prop key="addSection">
PROPAGATION_REQUIRED,ISOLATION_DEFAULT
</prop>
</props>
</property>
</bean>


</beans>