The Balance of Terror

There is a problem with the new jewel, I misunderstand the mechanics and need to apply Vulnerability on my own? I have The Balance of Terror with two effects "double damage if you've cast vulnerability past 10 sec" and "unaffected by bleeding if you've cast vulnerability", the first effect works in path of building(but this is a third-party application, maybe the problem is in it), and the second effect does not work and does not give me invulnerability to bleeding if I apply vulnerability when hit from my glove(tested in game, died from bleeding and cringe -_-), is that how it should be?)

"If you've cast" means you have to cast the curse, not trigger it or apply it on hit.

Yeah. tyty. just trying it in pob and double damage worked... So close