iOS Swift Basics Swift Types String Manipulation

won't let me cocate

I've tried different ways and I'm sure I'm over complicating this but i feel the complier is much more unforgiven than Xcode

strings.swift
let name = "Pasan"
let greeting = "hi there, \(name)"
let final = "\(greeting)"

let finalGreeting = "\(greeting) + how + ", " + are + ", " + you"