Registering new Vocabulary for the Speech-To-Text-Plugin to understand (IOS)

[Musfira1]

Hey guys!

I was able to integrate the plugin into my on my iPhone - there's one thing I am curious about.
As I am using the German language, some complex technical terms cannot be understood by Siri.
However I do know that there's a way with Sirikit to register app-specific language.
The only problem I have with this are the intents as I'm not sure to which domain/ intent this newly added vocabulary belongs to.
(See attached picture under parameter names)
Do you guys think that there is a way to register an app-specific vocabulary with the help of Sirikit upon this plugin or would that be just impossible?
I would be very greatful for any kind of help!