If you want to check how much days you have left, and you want it through events. Here's what you could do:
- Make another variable. We'll call it, "Max Day". We'll call the variable that increases one every night, "Day Count".
- Lets say the "certain amount of days" is 10.
- Make "Max Day"'s value 10.
- To check the amount of days left, simply substract the "Day Count" from "Max Day".
- Then, in the text. Make it show Max Day. It will show you how much days you have left.
- Make the "Max Day"'s value 10 again.
And thats it!