Passing a sensor state to a HomeMatic System variable throws a ValueError

Configuration
1

Hello community,
I want to pass the value from an “Open Windows / Doors count”
sensor (sensor.door_window_count) to a Homematic system variable
(OpenWindowsCount). The sensor.door_window_count is created
with the following template:

- platform: template
  sensors:
    door_window_count:
      friendly_name: "Anzahl Fenster/Türen offen"
      entity_id:
        - binary_sensor.tk_eingang_state
        - binary_sensor.tk_keller_state
        - binary_sensor.fk_arbeitgarten_state
      value_template: >
        {{ states.binary_sensor
          | selectattr('state', 'eq', 'on')
          | selectattr('attributes.device_class', 'eq', 'opening')
          | list
          | count
          | int}}

The HomeMatic system variable is defined like that:

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The automation which is not working looks like that:

- alias: open_windows_to_HM
  initial_state: true
  trigger:
  - entity_id: sensor.door_window_count
    platform: state
  action:
    - service: persistent_notification.create
      data:
        title: "Open Windows"
        message: Count = {{states('sensor.door_window_count')|float}}
        notification_id: windows
    - service: homematic.set_variable_value
      data:
        entity_id: homematic.ccu2
        name: OpenWindowsCount
        value: "{{states('sensor.door_window_count')|float}}"

Passing the count of open windows/doors to the notification service works, but giving
it to the homematic.set_variable_value service throws the following error:

Blockquote

Traceback (most recent call last):
File “/usr/src/homeassistant/homeassistant/components/automation/init.py”, line 431, in action
await script_obj.async_run(variables, context)
File “/usr/src/homeassistant/homeassistant/helpers/script.py”, line 151, in async_run
await self._handle_action(action, variables, context)
File “/usr/src/homeassistant/homeassistant/helpers/script.py”, line 235, in _handle_action
await self._actions[_determine_action(action)](action, variables, context)
File “/usr/src/homeassistant/homeassistant/helpers/script.py”, line 318, in _async_call_service
context=context,
File “/usr/src/homeassistant/homeassistant/helpers/service.py”, line 98, in async_call_from_config
domain, service_name, service_data, blocking=blocking, context=context
File “/usr/src/homeassistant/homeassistant/core.py”, line 1235, in async_call
await asyncio.shield(self._execute_service(handler, service_call))
File “/usr/src/homeassistant/homeassistant/core.py”, line 1262, in _execute_service
await self._hass.async_add_executor_job(handler.func, service_call)
File “/usr/local/lib/python3.7/concurrent/futures/thread.py”, line 57, in run
result = self.fn(*self.args, **self.kwargs)
File “/usr/src/homeassistant/homeassistant/components/homematic/init.py”, line 470, in _service_handle_value
hub.hm_set_variable(name, value)
File “/usr/src/homeassistant/homeassistant/components/homematic/init.py”, line 855, in hm_set_variable
value = float(value)
ValueError: could not convert string to float: “{{states(‘sensor.door_window_count’)|float}}”

Blockquote

Have also tried to implement it this way will also not work:

- service: homematic.set_variable_value
      data:
        entity_id: homematic.ccu2
        name: OpenWindowsCount
        value: [sensor.door_window_count]

“TypeError: float() argument must be a string or a number, not ‘NodeListClass’”

Please help! Regards BP.

2

I don’t know anything about homematic, but I do know, if you want to evaluate a template in a service call, you need to use data_template, not data.

3

The hint from pnbruckner with data_template was the solution. Thanks!

- alias: hm_open_windows_count
  initial_state: true
  trigger:
  - entity_id: sensor.door_window_count
    platform: state
  action:
    - service: homematic.set_variable_value
      data_template:
        entity_id: homematic.ccu2
        name: OpenWindowsCount
        value: "{{states('sensor.door_window_count')|float}}"