I find my error, in the QName
private boolean havePropertiesBeenModified(NodeRef nodeRef, Map before, Map after)
{
boolean result=false;
QName name = QName.createQName("Asuntos.model", "asunto");
Serializable beforeValue = (Serializable)before.get(name);
Serializable afterValue = (Serializable)after.get(name);
if(!EqualsHelper.nullSafeEquals(beforeValue, afterValue))
{
result=true;
}
return result;
}