Add entities to context node in AET

Hi,

I created a table the service order object via the AET. Now I want to add multiple lines to the table via a button. I tried to create the entities in the event handler via the CREATE method of class CL_CRM_BOL_ENTITY_FACTORY and then add the entities to the context node. This doesn't work because the table is created as a dependent object. I guess I have to add the entity via the parent node but how can I get a reference to the parent node in the AET component?

Any help would be appreciated,
Patrick