fadeup/down on button press

fade_w_button.yaml

# Define Global variable
  globals:
  - id: my_global
    type: bool
    restore_value: no
    initial_value: 'true'

# Define momentary button for use with the on_press
binary_sensor:
  - platform: gpio
    pin:
      number: 22
      mode: INPUT_PULLUP
      inverted: True
    id: button1
    name: button1
    retain: false


    on_press:
      then:
        - if:
            condition:
              # lambda to ensure the global variable is returning true initially.  Just for debug.
              lambda: |-
                # ESP_LOGD("paul", "Global value is: %d", id(my_global));
                return id(my_global);
            # When above condition evaluates to true - Fade_up function else Fade_down
            
            then:
              # Fade_up function
              - while:
                  condition:
                    binary_sensor.is_on: button1
                  then:
                    - light.turn_on:
                        id: printer_led
                        brightness: !lambda 'return id(printer_led).get_current_values().get_brightness() + 0.05;'
                    - delay: 0.05s
                    - logger.log: "executing up"
              # flips the value of the global variable once the button is released
              - lambda: |-
                  id(my_global) = (false);
            
            else:
              # Fade_down function
              - while:
                  condition:
                    binary_sensor.is_on: button1
                  then:
                    - light.turn_on:
                        id: printer_led
                     #  brightness: !lambda 'return (id(printer_led).get_current_values().get_brightness() == 0) ? 0 : id(printer_led).get_current_values().get_brightness() - 0.05;'
                        brightness: !lambda 'return id(printer_led).get_current_values().get_brightness() - 0.05;'
                    - delay: 0.05s
                    - logger.log: "executing down"
              # flips the value of the global variable once the button is released
              - lambda: |-
                  id(my_global) = (true);