Multiple services/characteristics with the same UUID

BLE seems to support multiple of the same UUID for services and characteristics, for example you could use the automation IO service with 4 digital characteristics. With Espruino, specifying the services as an object seems to prevent that as the keys won't be unique, ie:

NRF.setServices({
  0x1815: { // automation
    0x2A56: { // digital
      readable: true,
      value : 1,
    },
    0x2A56 { // digital --> gets ignored as it's a duplicate key
      readable: true,
      value: 0
    }
  }
});

Is there any way around this?