Detecting a low batter on a z-wave device

1

I have a single Schlage z-wave lock, when I type “schlage” in the device filters I see a bunch of items, notably the zwave and lock items, but a lot of related sensors.

zwave.schlage_be469_touchscreen_deadbolt_2
lock.schlage_be469_touchscreen_deadbolt_locked_2

The zwave.schlage_be469_touchscreen_deadbolt_2 entity has a battery_level attribute. I’m trying to use IFTTT to send me a notification when the battery level drops. I have hard-coded “1” in for the IFTTT value but eventually, I want to replace that with the actual battery level. But so far, the automation isn’t firing at all (or at least IFTTT isn’t getting anything). What am I doing wrong?

- alias: Front Door Low Battery
  trigger:
    platform: numeric_state
    entity_id: zwave.schlage_be469_touchscreen_deadbolt_locked_2
    value_template: '{{ states.zwave.schlage_be469_touchscreen_deadbolt_2.attributes.battery_level }}'
    below: 99
  action:
    - service: ifttt.trigger
      data: {"event": "FrontDoorLowBatteryDetected","value": "1"}