Indesign 2023 - Javascript reference for hiding the home screen

Hi all,
I'm using javascript within an applescript app to help setup preferences for Indesign 2023. I want to disable the Home Screen but can't seem to find the javascript reference anywhere? I think it used to be something as follows, but this no longer works...
app.generalPreferences.showWhatsNewOnStartup = false
Any help would be much appreciated! 🙂
Cheers,
Sam
