Reverse Children sort order

Hey, so I am still working on my simulator. . . this is not CRUCIAL but I would like to be able to change it.

As the notes come down the screen, they get added on top of each other since each child is added at a specific time.

Is there a way I can reverse the sort order? So notes added after notes become layered behind instead of in front?

Like, starting a value of 9999–;

Thanks! (Here is an image of how it looks at the moment, wrong layering)