technically, there would be a way to control Data Layers like levels, but many of the relevant nodes are only in the documentation, they dont exist in the engine.
only some of them can be found, and only after turning off context sensitivity - its a complete mess.
I have zero clue on how any of this is supposed to work, when the nodes cant be accessed.
EDIT: I mean, I am aware that some things dont work in a Function for example, but where are these nodes supposed to be used - especially the missing ones, like “get actors from data layer”… which is what could be easily used to save stuff.
I also checked YouTube already, couldnt find a single video explaining this, they all just go over “how to add data layer to the list”.