Change speech recognition language to de-de

[nils-fl]

I am not managing to make the chatbot recognize my speech input as German. I managed to change the text-to-speech to German, but when I talk into the mic the bot thinks I talk English. I saw that I can possibly change it via
config.SpeechRecognitionLanguage = "de-de";
But honestly, I have no clue where to put it.
Am I right that I have to change something in the SpeechModule.js?

I solved it by changing
o = i.SpeechResultFormat.Simple, s = e.locale || "en-US"
to
o = i.SpeechResultFormat.Simple, s = "de-DE"
in wwwroot/lib/CognitiveServices.js