Unable to use Siri Voice IOS

I am unable to use the voices from the siri voice pack, despite having them installed on my device.

edit: Apparently Apple doesn’t vend this voice out to 3rd party developers. :frowning: How to set Siri Voice in AVSpeechS… | Apple Developer Forums

iOS: iPhone 11 @17.3.1
Clozemaster: @2.9.8

Yes, Apple does not allow it. The Siri voice can only be used by Apple apps. This is no fault of Clozemaster. I had the same problem when I wanted to use the Siri voice with the flashcard app Anki.