Can a button snap a slider, alternating between the slider’s default and the last value set on the slider?

Question

Hello! I am wanting to set up a button that will control a slider, causing the slider to alternate between its last value set by me and its default (zero in this case). I am wanting this behavior so that I can use a slider to adjust volume as needed live, but then be able to mute that target track by sending the default of zero. Then, when I want to unmute the track, I hit the button again and the slider hopefully goes back to where it was before I defaulted it to zero.

I can get the slider to snap to zero, OR to send it’s current value, but I can’t find a way to alternate between the two. Is this behavior a current option? Or do I need to get more creative with some hidden helpers?

Thanks for your consideration!