I simply access the method variable of the structure via point. -> actor.set (Are you using dot notation within a with block for the same thing? That's actor.actor.set, which probably isn't a thing.
When doubt, file a bug! The devs can't be aware of everything and your best resource is always to file a bug. At the very least, you'll find out if it's being worked, been suggested, or not on the roadmap.I don't know whether to open a ticket in the bug section or not