Can't invalidate the CMP bean's cache. Please help

Dear all,
The ClassCastException raised while calling:
(weblogic.ejb.CachingLocalHome)home).invalidate (Arrays.asList(primaryKeys));
The CMP bean uses optimistic concurrency and caching between transactions.
<b> Please advice what weblogic-ejb-jar.xml attributes may be set to cause Weblogic generate proper Home stub that may be cast to CachingLocalHome?</b>
P.S. weblogic-ejb-jar.xml :
<weblogic-enterprise-bean>
<ejb-name>MyEntity</ejb-name>
<entity-descriptor>
<entity-cache>
<concurrency-strategy>Optimistic</concurrency-strategy>
<cache-between-transactions>True</cache-between-transactions>
</entity-cache>
</entity-descriptor>
</weblogic-enterprise-bean>

check the documentation for invalidation of RO entity beans there is example code to invalidate on OCE.
http://e-docs.bea.com/wls/docs81/ejb/entity.html#ChoosingaConcurrencyStrategy

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