self.db.collection(&#34;jokes&#34;).document(&#34;Dad Jokes&#34;).addSnapshotListener { document, error in
                //check for error
                if error == nil {
                    //check if document exists
                    if document != nil &amp;&amp; document!.exists {
                        if let JokeNum = document!.get(&#34;JokeNum&#34;) as? Int {
                            self.countDadJokes = JokeNum
                            UserDefaults.standard.setValue(JokeNum, forKey: &#34;countDadJokes&#34;)
                            print(&#34;DadJokeNum = \(self.countDadJokes)&#34;)
                        }
                        var count = 1
                        print(&#34;count = \(count)/\(self.countDadJokes)&#34;)
                        print(&#34;countDadJoke = \(self.countDadJokes)&#34;)
                        while count &gt;= self.countDadJokes {
                            print(&#34;count = \(count)/\(self.countDadJokes)&#34;)
                            if let Joke = document!.get(&#34;\(count)&#34;) as? String {
                                print(&#34;DadJokeNum = \(self.countDadJokes)&#34;)
                                self.dadJokes.append(Joke)
                                print(&#34;Dad Joke: \(Joke)&#34;)
                                UserDefaults.standard.setValue(self.dadJokes, forKey: &#34;dadJoke&#34;)
                                count = count + 1
                                print(&#34;count = \(count)/\(self.countDadJokes)&#34;)
                            }
                        }
                    }
                }
            }