Hi Daniela,
No, you can’t just destroy the “parent” object and expect the “child” objects to be destroyed as well… at least not in this usage case (if you created a parent display group, you could remove the group and all children would die with it).
It may be better to relate these children to the parent in a more elegant way. Consider creating a table as a property of the parent, then adding children to the table. Later, you could loop through that table and destroy the children, followed up by destroying the parent.
Of course there are other options and ways to handle this… this is just one suggestion.
Take care,
Brent