There is a test which creates a cube with value 2, then it sets c.Side = 3;, and checks if volume is 27. That means your code isn't updating the values accordingly. Overall this doesn't seem like a kata issue, so I'll close it.

Nothing wrong withe a Kata. Your code is just wrong. Return the right value for v and s prop.

I have this problem too. Do you have solution for this?

I have the same problem.
Language is c#