Purpose Text for Apple Events Permission

Hi, im updating my app for Mojave at the moment, it is a small utility that batch creates folders, using the finder via applescript to create the folders.
Currently it pops up a "App Name" would like to control "Finder" permission box when the user goes to create the folders. I would like to add a purpose text to let people know why this pop up is happening, as talked about in this video.
https://developer.apple.com/videos/play/wwdc2018/702
I cant find the correct key to add to my info.plst to add purpose text in for apple events. There doesent seem to be any mention of it in the video and I cant find it in the documentation. I tried as a guess NSAppleEventsUsageDescription but to no avail.
Does anyone know what the key is? Or if it exists at all.
Cheers.

Replies

I haven't verified yet that it's accurate, but read this: https://www.felix-schwarz.org/blog/2018/06/apple-event-sandboxing-in-macos-mojave

NSAppleEventsUsageDescription was added in 10.14 beta 7.