Here's the directions for the challenge...

"We need to add getter and setter methods to the fahrenheit property of the Temperature class. Add a getter method to access the value of the fahrenheit property. Then add a setter method. When the user assigns a value to the fahrenheit property, the setter method will calculate and assign a value to

the celsius property. (Note: Celsius = (Fahrenheit-32/1.8))"

I've tested this code in the Swift REPL and used a calculator... and it's correct. Apparently the challenge is looking for different syntax. But I don't know what it wants. The newValue keyword doesn't seem appropriate here.

class Temperature {
    var celsius: Float = 0.0
    var fahrenheit: Float {
    get {
      return (celsius * 1.8) + 32.0
    }

    set {
      celsius = (fahrenheit - 32) / 1.8
    }

    }    
}