In case anyone is still checking this thread, it definitely CAN be done. In my construction script I have an array of classes (Main Equipment C) which I want to become child actors. I add them using the a “ForLoop” and “Add Child Actor Component” node and then add the output of that node to an array of child actors (Main Equipment A), and immediately after “Set Child Actor Class” from my Array of classes.
Then in my event graph, when I need to trigger something on one of my child actors, I get it from my Main Equipment A array of child actors, and then “Get Child Actor” in order to get the reference I need to do it.
Hopefully this helps someone.