Using Puck as a single button keyboard

I'm trying to setup my puck as a single button keyboard to send a character (or two) when the button is pressed, I'm not having much luck and struggling with how to debug it, as I understand it I have to disconnect the web bluetooth IDE before the puck can connect as a keyboard?
I've flashed the code below to the puck then disconnect and press the button, the BLUE LED comes on for 10sec then the red one flashes as I would expect indicating its failed, I've tried scanning for new bluetooth devices (keyboards) from my Mac and iPhone after I disconnect but nothing is found.

var kb = require("ble_hid_keyboard");
NRF.setServices(undefined, { hid : kb.report });
var reset_timer;

function sendKB(){
  LED3.set();
  kb.tap(kb.KEY.H, kb.MODIFY.SHIFT, function() {
    kb.tap(kb.KEY.i, 0);
    });
  clearTimeout(reset_timer);
  LED2.set();
  setTimeout("LED2.reset()",1000);
  LED3.reset();
}

function onTimeout() {
  setTimeout("LED1.reset()",1000);
  LED1.set();
  LED3.reset();
}

setWatch(function() {
  reset_timer = setTimeout("onTimeout()",10000);
  sendKB();
  }, BTN, {edge:"rising", debounce:50, repeat:true});

I'm running 1.9.1 on my puck, updated to that this morning