Control puck with a uwp app?

I have added a service to my puck using the following code -

NRF.setServices({
  "6E400004-B5A3-F393-E0A9-E50E24DCCA9E" : {
    "6E400005-B5A3-F393-E0A9-E50E24DCCA9E" : {
      value : analogRead(D29),
      broadcast : true,
      readable : true
    }
  }
});

but I don't see it in the list of services when I use my app to connect to the puck I still only see-
0x1800, 0x1801 & 6e400001-.....

have I added the service wrong? do I need to activate the service every time I connect to the puck or something? Any thoughts would be appreciated.