How to use input_number as numeric_state in condition

How can I use the value of a helper to check if an entity is above this value?

Something like this doesn’t work.

condition: numeric_state
entity_id: input_number.test
value_template: 'above: states("input_number.test2")|float '

Like the example in the docs:

  condition: numeric_state
  entity_id: climate.living_room_thermostat
  attribute: temperature
  above: input_number.temperature_threshold_low
  below: input_number.temperature_threshold_high