Hi all, to solve this question I've associated the following .betwixt file with the class that extends BeanContextChildSupport
<?xml version='1.0' encoding='UTF-8' ?>
<info primitiveTypes='attribute'>
<element name='XXX'>
<hide property='beanContext'/>
<hide property='beanContextChildPeer'/>
<hide property='propertyChangeListeners'/>
<hide property='vetoableChangeListeners'/>
<hide property='delegated'/>
<addDefaults/>
</element>
</info>
Now it's working ;-)
Regards
Marcos
