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I have the following piece of Konva code and I am trying to update the text attribute

var lifePoint = new Konva.Text({
    x: 50,
    y: 50,
    id: 'P1',
    text: 'Player Lifepoint: 100',
    fontSize: 30
After reading the documentation I tried:
// find and change text
const test = layer.find('#P1')[0];
test.setAttr('text', 'changed');
Could anybody possibly tell me what I am doind wrong?
                The code looks good. You need to update the layer if you want to see changed. layer.draw().
– lavrton
                Oct 22, 2018 at 15:43
layer.draw(); // My favorite to forget !
// When the user gets more life points add them on.
$('#addlife').on('click', function(e){
  // find and change text
  var text = layer.find('#P1')[0];
  pts = pts + 10;
  text.setAttr('text', 'Player Lifepoint: ' + pts);
  layer.draw(); // remember to redraw the layer to see the change !
#container
width: 400px;
height: 100px;
border: 1px solid lime;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/2.4.2/konva.min.js"></script>
<p><button id='addlife'>Add life</button></p>
<div id='container'></div>
        
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