CloudKit: How to create a new record in a Container's Public Database (Swift)

ios-cloudkit-swift-newrecord

        //create a new RecordType
        let wellKnownID: CKRecordID = CKRecordID(recordName: "1")
        let pointOfInterest: CKRecord = CKRecord(recordType: "POI", recordID: wellKnownID)
        
        //create and set record instance properties
        pointOfInterest.setObject("Sample point of interest", forKey: "title")
        pointOfInterest.setObject("My favorite point of interest", forKey: "description")
        pointOfInterest.setObject("123 Main Street, Endor", forKey: "address")
        
        let location: CLLocation = CLLocation(latitude: 47.605024, longitude: -122.335274)
        pointOfInterest.setObject(location, forKey: "location")
        
        //get the PublicDatabase from the Container
        let defaultContainer: CKContainer = CKContainer.defaultContainer()
        let publicDatabase: CKDatabase = defaultContainer.publicCloudDatabase
        
        //save the record to the target database
        publicDatabase.saveRecord(pointOfInterest, completionHandler: { (record, error) -> Void in
            
            if error != nil {
                println("Uh oh, there was an error saving...")
                println(error.localizedDescription)
            }
            
            if record != nil {
                println("Saved Successflly")
                println(record.objectForKey("title"))
                println(record.objectForKey("description"))
                println(record.objectForKey("address"))
                println(record.objectForKey("location"))
            }
        })