...or rather line. I just have a simple:

Me: Greetings. Are you the keeper here?
Keeper: Yes, my name is --------. Nice to meet you.

That's it, nothing fancy at all. I only did it by following the tutorial step-by-step and tested that out in-game. I did the GetIsID and gave it to my NPC I wanted to say the line, even recorded some silence. But no matter what, the NPC simply won't say the line.

Is there something I'm missing?