So the first session is in two days and I cant figure out how to make the magic item increase heath. Like it seems like it should be simple? Am I missing something? or can you just not do it?

It is not currently possible.

I figured it out lol. 

Oh?

I went to modifiers, bonus, hit points, constitution. Them repeated 10 times lol

And that worked?!? Wow. The Bonus->Hit Points modifier has never worked before. They must have updated something. Either that or your item doesn’t actually work on the character sheet.

It's works, only took 5 hours lol

Sonofagun. That actually worked. Huzzah!! Thank you!!