Clearing user-specific checkboxes using actions

In a workout app, I have a set of exercises that the user completes. At the end of the workout, the user checks the box to indicate they are done with the workout. After completing a month’s worth of workouts, I want to give the user a chance to clear the checkboxes for the following month. Using actions and the set column values, I can clear the checkbox of the first day, but cannot clear it for the other days. Has anyone had success with clearing checkboxes in this manner?

Perhaps not exactly what you are looking for, but you might be able to adapt the technique to suit your use case.