I would like to make a **`PLAY/PAUSE`** button to **`responsive-voice.js`** lib. It will start reading after clicking PLAY and change button label on PAUSE When again I will click this button it will of course pause and change the label on RESUME. After click RESUME it will continue reading the text from **PHP**. Right now my script not working.

```
<input id=playsound; onclick='changeState("<?php echo $step[' description ']; ?>");' type='button' value='PLAY' />

                            <script>
                                function changeState(tekst) {

                                    var buttonvalue = document.getElementById('playsound').value;
                                    switch (buttonvalue) {
                                        case "PLAY":
                                            document.getElementById('playsound').value = "PAUSE";
                                            document.getElementById('playsound').onclick = responsiveVoice.speak(tekst, "Polish Female");
                                            break;

                                        case "PAUSE":
                                            document.getElementById('playsound').value = "PLAY";
                                            document.getElementById('playsound').onclick = responsiveVoice.pause();
                                            break;

                                    }
                                }

                            </script>

```