How to make a case return a different value if a variable is true in swift?

I was wondering if I could have a case statement return a different value if a variable was true or false.

var variable = false
enum enumeraton {
    case thing
    var value: Int {
        switch self {
        case .thing:
            if variable = true {
                return 1
            }else {
                return 2
            }
        }
    }
}

is there anyway to do this?