Add lives to each X coins.

I have already developed the scoring system and it is working perfectly, however I want to add, for every 10 coins add 1 life. How would I do that? I've tried it in many ways, but to no avail. I know how to subtract lives, but to compare and add, I don't know.

Sorry if I had an error, translated by Google Translate.

If coins and lives are instance variables on the player object, you can compare instance variables as a condition and change them as an action. If it's set up differently I could find a different solution

Whenever a coin gets used,add one to a variable (any variable)

Then to show score use int(variable/10)