How to record and store an audio file and a unique identifier for that file on device (iPhone/iPad)

Hello, I want to record an audio file (5 seconds of voice message), then store it on my device as a file and create at the same time a key of an object that I store in Properties, that let me retrieve the sound at a later time.

With this code I should record:

recordBtn.addEventListener("click", function(e) {
 
        var currentSessionMode = Titanium.Media.audioSessionMode;
        Titanium.Media.audioSessionMode = Ti.Media.AUDIO_SESSION_MODE_PLAY_AND_RECORD;
 
        var recording = Ti.Media.createAudioRecorder();
        recording.compression = Ti.Media.AUDIO_FORMAT_ULAW;
        recording.format = Ti.Media.AUDIO_FILEFORMAT_WAVE;
 
        recording.start();
 
        Ti.Media.startMicrophoneMonitor();
 
        var rec = Titanium.Filesystem.getFile(getScrollableViewStatus() + '.wav');
        //
        setTimeout(function() {
            var recordedFile = recording.stop();
            rec.write(recordedFile);
 
            var currentKey = getScrollableViewStatus();
            var currentValue = rec.nativePath;
 
            var obj = Ti.App.Properties.getObject("sounds")||{};
            var tempObj = obj;
            tempObj[currentKey] = currentValue;
            Ti.App.Properties.setObject("sounds", tempObj);
 
            // test play
            var o2 = Titanium.App.Properties.getObject("sounds");
            var k = o2[currentKey];
            var fileToPlay = Titanium.Filesystem.getFile(k);
 
            var sound = Titanium.Media.createSound({
                url : fileToPlay
            });
            sound.play();
 
            //
        }, 5000);
    });