Increase maximum HP

You should be able to increase the max HP of NPCs past 500, even if you’re likely never going to fight them. It would better suit high end, god-like beings in campaigns where they act like side-characters, or help move the plot forward, but you wanted to make very hard to kill. I have a powerful NPC I wanted to have 1000 HP, but wasn’t able to. So I’d really appreciate if you were able to increase the max HP!