ServiceAccountFile - the service account JSON file generated from Google Cloud Platform.
Confidence - level of speech detection between 0 and 1.
Language - the language for the SpeechToText activity (e.g., en, fr).
LanguageCode - the language code for the TextToSpeech activity (e.g., en-US, fr-FR).
Gender - the gender of the voice.
Problems at Runtime
Because UiPath already has some activities that are using Google API, you will find Google.Apis.* dll files in AppData\Local\UiPath\app-* (where * is your version number) or in C:\Program Files (x86)\UiPath\Studio.
The files have the version number 126.96.36.199, but this package is using 1.33.1. So in order to have everything working, you can rename them to Google.Apis.*_old, forcing Studio to load the latest dependencies.
Interact easier with your processes using voice commands.