How do you cloud save each level data. Like Candy crush game

I am developing a puzzle game. So I want to save the score, time and stars earned for each level in the google play Cloud. But I am able to save it for one single level if I try to save it for more then 1 level. it overwrites the previous data. So how do I overcome this problem?

 

You structure your saves so they will allow for multiple levels. Not sure what else to say unless you give more information about what you're doing.