How to use the AzureTexttospeech connector in a PowerApp

I selected the connector and put a button on the canvas.

On the OnSelect method I placed following code

Set( _myOutput, AzureTexttospeech.ConvertTextToSpeech("en-US-JennyNeural", "en-US", TextOut.Text));

Where can I find the audio fragment to set on my Audio object?

How to use this connector?