How can I animate a button that is a child of a canvas?

Hi - How can I animate a button that is a child of a canvas?
I have a GO! button that I would like to scale up to prompt users to start a gameplay scene, and my animation runs in the Animator but not in Game mode.
I have tried using a game objects, placing an image as a child of the button, still no luck. Any suggestions on how might I fix it so the prompt animation works? Thank you! - k

110968-unitybuttontransition.png

Set this to Animation

Thank you, but unfortunately, that didn’t work either - the button still animates in the Animator, but not in Game mode. I appreciate the effort! - k