Capturing bluetooth device battery level from android intent

Configuration
1

I am having trouble capturing data from an android intent.
I suspect it is because the of the decimals in the intent data, but not sure.

Companion app is setup and working properly.
Here is Developer Tools / Events / android.intent_received:

Event 0 fired 1:37 PM:

{
    "event_type": "android.intent_received",
    "data": {
        "android.bluetooth.device.extra.BATTERY_LEVEL": "20",
        "android.bluetooth.device.extra.DEVICE": "35:84:A6:60:6A:08",
        "intent": "android.bluetooth.device.action.BATTERY_LEVEL_CHANGED",
        "device_id": "ed6a27e8610a611d"
    },
    "origin": "REMOTE",
    "time_fired": "2021-10-26T20:37:40.351179+00:00",
    "context": {
        "id": "4a83d4dc447d94cee53e0fffe50e7358",
        "parent_id": null,
        "user_id": "bdad29b228aa4efa9ed620b5d6082916"
    }
}

The automation triggers succesfully, but the action (input_number.set_value) fails.
Here is the automation:

- id: '1634663270084'
  alias: Bluetooth Speaker Battery Level monitor
  description: ''
  trigger:
  - platform: event
    event_type: android.intent_received
    context:
      user_id:
      - bdad29b228aa4efa9ed620b5d6082916
  condition: []
  action:
  - service: input_number.set_value
    target:
      entity_id: input_number.bluetooth_speaker_battery_level
    data:
      value: '{{ trigger.event.data.android.bluetooth.device.extra.BATTERY_LEVEL }}'
  - device_id: 17145cd82f9fb23cf9254326d09b9f96
    domain: mobile_app
    type: notify
    title: Bluetooth Speaker Battery Level monitor
    message: 'Intent received: {{ trigger.event.data.intent }} {{ trigger.event.data.android.bluetooth.device.extra.BATTERY_LEVEL
      }}'
    data:
      ttl: 0
      priority: high
  mode: single

Automation trace / Step Config:

service: input_number.set_value
target:
  entity_id: input_number.bluetooth_speaker_battery_level
data:
  value: '{{ trigger.event.data.android.bluetooth.device.extra.BATTERY_LEVEL }}'

Automation trace / Step Details:

Executed: October 26, 2021, 1:37:40 PM

Error: Error rendering data template: UndefinedError: 'dict object' has no attribute 'android'

So I think my question is, how do I reference this with trigger.event.data?:

    "data": {
        "android.bluetooth.device.extra.BATTERY_LEVEL": "20",
2

Any of the following would be helpful:

  1. Check if I have done something wrong (or point me in the direction of resources that I can use to investigate myself)

  2. Rules/syntax for trigger.event.data
    Am I even doing it the right way?
    If so, then is this a limitation of not being able to use .? Should I submit a bug report or feature request?

  3. Any other method?
    If . are not allowed to be used in trigger.event.data, is there another way to accomplish it? Should I be trying to use a Template? Or some kind of escape character?

3

Got the solution, thanks to friendly help on Discord.
Needed some brackets and quotes:

    data:
      value: "{{ trigger.event.data['android.bluetooth.device.extra.BATTERY_LEVEL'] }}"

Or, as reformatted by saving in the GUI:

    data:
      value: '{{ trigger.event.data[''android.bluetooth.device.extra.BATTERY_LEVEL'']
        }}'