You could have a reset text under or next to the rating that appears after its been rated (use a when elements value is > 0 this element is visible condition). then just have this text or button update the rating to 0
I think you will need to put the rating inside a Group, and then reset that. Initial content needs to be 0.
Reset Relevant Inputs doesn’t appear to work.
Example here.
Although this is the same as the old “can’t undo a radio button” UX issue isn’t it ? It might be easier to change the way it works so that “1 star” is the lowest rather than zero. That way if someone has made a choice you are making it mandatory for them ?
I know this question is very old, but I was trying to do the same thing here and found that I could not set the star to 0. I did find a work around.
If you create this plugin inside a group all you need to do is when you click on the group itself outside the star to set the rating to 0. It worked for me.