Puck.js setWatch on web

Hoping someone can help. Basically I want to call a function when I click on my PuckJs. Trying to use setWatch on my Puck.js. Works fine from the https://www.espruino.com/ide/

But when I try and call the setWatch function from a webpage using bluetooth I get errors:
Errors:

setWatch is undefined

Code is:

setWatch(function() {
  console.log("Pressed");
}, BTN, { edge: "rising", debounce: 50, repeat: true });

Also if I load the code to the device through the webIDE, I cannot see the console.log message in chrome debug tool.s