So, I remixed a project to make a mute/unmute button but it did not work. Please help, if you help you will be credited. Project link is here.

The numbers in the if statements are supposed to be different?

This code was located in the mute/unmute sprite.
Edit: Also if you're trying to mute the music too, the volume reporter block is local, so it isn't changed in the Stage. You may want to save what the volume would be if it wasn't muted so if the player unmutes, then you can load that.