PUCK Ble HID keyboard

Thank you for your replay Robin.
That is the correct tutorial I was referring to.

I had thought that I may have reached the array limit on the tap(), but I'm unsure as I cannot find much detail about the function in documentation. I tried only sending the character's in small chunks, exectuing the function several times but this also failed:

function sendNewTest() {
  NRF.sendHIDReport([2,0,4], function() {
  NRF.sendHIDReport([0,0,0]);
});
  NRF.sendHIDReport([2,0,5], function() {
  NRF.sendHIDReport([0,0,0]);
});
  NRF.sendHIDReport([2,0,6], function() {
  NRF.sendHIDReport([0,0,0]);
});
  NRF.sendHIDReport([2,0,7], function() {
  NRF.sendHIDReport([0,0,0]);
});
  NRF.sendHIDReport([2,0,8], function() {
  NRF.sendHIDReport([0,0,0]);
});
  NRF.sendHIDReport([2,0,9], function() {
  NRF.sendHIDReport([0,0,0]);
});
  NRF.sendHIDReport([2,0,10], function() {
  NRF.sendHIDReport([0,0,0]);
});
  NRF.sendHIDReport([2,0,11], function() {
  NRF.sendHIDReport([0,0,0]);
});
  
}

Also I found reference using the puck.js for keyboard inputs over BLE on another topic, where Gordon suggests it would be possible at the tend of his first paragraph:
http://forum.espruino.com/conversations/307801/

The other confusing thing is (which could be due to my lack of JS knowledge), when sending fewer characters (say 3 for example), why does this work:

> function sendCap() {
>   // Send 'a'
>   kb.tap(kb.KEY.A, 0, function() {
>     // Followed by 'b'
>     kb.tap(kb.KEY.B, 0, function() {
>     // Followed by 'c'
>     kb.tap(kb.KEY.C, 0);
>     });
>     });
>   
> }

but not this?:

> function myCommand() {
>   kb.tap(kb.KEY.A, 0);
>   kb.tap(kb.KEY.B, 0);
>   kb.tap(kb.KEY.C, 0);
> }

Why is it that the tap() has to be nested like that?