Working with NSNumber & Integer values in Swift 3

Question

I am trying to convert my project to Swift 3.0 however I am having two error messages when working with NSNumber and Integers.

Answer 1

Swift 4:

var currentIndex:Int = 0
for item in self.selectedFolder.arrayOfTasks {
   item.index = NSNumber(value: currentIndex) // <--
   currentIndex += 1
}