Slider option adjustRed not available

Cocoa Programming for OS X (5th Edition) 5. Controls
1

Slider option is adjustRedWithSender: not adjustRed which the book and code specified?

@IBAction func adjustRed ( sender: NSSlider) {
print(" R slider’s value is ( sender.integerValue)")
}
Result is error message when executing code:

RGBWell.MainWindowController does not respond to -adjustRedWithSender:

Why is the Received action adjustRedWithSender and not adjustRed ?

Xcode version 8.0, Swift Version 3.0.
5th addition Book

2

Got it to work. Changed func name adjustRead to adjustReadWithSender.

@IBAction func adjustRedWithSender ( sender: NSSlider) {
print(" R slider’s value is ( sender.integerValue)")
}

out put is correct.

R slider’s value is 74
R slider’s value is 29
R slider’s value is 100
R slider’s value is 14