Text to Speech Converted

I have connected with Bhasker S. on LinkedIn and he has created a javascript that allows the text to speech to be converted so it is spoken. He is doing all of this in Storyline and I have been able to take his script and get it to work.

What I am wondering is can we use the Articulate Storyline voice instead of SpeechSynthesisUtterance(). What is the variable in Storyline to connect all of this? I am too new at this to figure it out but maybe someone here can or has.