Sprite Opacity and dynamically changing Z

Happy New Year Thunkers :tada:

I am trying to make some Sprites fade out when clicked (Like Domhnall’s example here

I’ve been mucking around with changing the sprite opacity and Z position to try to make it work, to no avail.

I have printed the Opacity or Z values to a label and they don’t appear to be changing.

Wondering if there’s something I’m missing? Or possible the opacity can’t be modified dynamically?

Thanks y’all.

Project link:

Screen Shot 2022-01-01 at 1.40.00 pm