I have seen ways to make cells as buttons to put checkmarks. What I want though is to make cells clickable. Then after it is clicked it will start a countdown.
To be more exact.

1. Click cell
2. Once cell is clicked it will have the number 10
3. Everyday it will count down to 9 until 0
4. Once it reaches 0 the cell will be blank again. (This one isn't a big deal if the 0 is still left in there)

Is this possible to do?