Not sure why this basic watchOS 2 app isn't working

This is the first day I am learning how to code. I want to make a simple WatchKit App using watchOS 2.

I got the Hello World app up and running and now when I try to have a menu press trigger a label to change, the code won't compile, with the following error:

WKInterfaceLabel doesn't have a member called set.

You can see the detailed image here.

Swift Code:

import WatchKit
import Foundation

class InterfaceController: WKInterfaceController {
    @IBOutlet var label: WKInterfaceLabel!
    override func awakeWithContext(context: AnyObject?) {
        super.awakeWithContext(context)

        // Configure interface objects here.
    }


    override func willActivate() {
        // This method is called when watch view controller is about to be visible to user
        super.willActivate()
    }

    override func didDeactivate() {
        // This method is called when watch view controller is no longer visible
        super.didDeactivate()
    }

    @IBAction func CookBabyCook() {
        label.set("Cooked!")
    }
}

Label.set() is the problem here.

I believe the label object doesn't have a set() method. You must replace it with setText().