Problem with Shell Command (Noob with Home Assistant)

Configuration
1

I’m learning bit by bit, I simply want a Input Number which activates a Arduino led which flashes the number of times entered.
I received this error always, and I don’t understand : - Invalid config for [shell_command]: expected a dictionary for dictionary value @ data[‘shell_command’]. Got ‘leds:“echo {{ states.input_number.arduino_led.state | int }} > /dev/ttyACM0”’. (See ?, line ?). Please check the docs at…

My configuration.yaml code

shell_command:
 leds:" echo {{ states.input_number.arduino_led.state | int }} > /dev/ttyACM0"

input_number:
  arduino_led:
    name: LED
    initial: 0
    min: 0
    max: 9
    step: 1
automation:
  - alias: 'Led'
    trigger:
      platform: state
      entity_id: input_number.arduino_led
    action:
      service: shell_command.leds

I tried with “echo 4 > /dev/ttyACM0” to discard the variable, changing quotes… same result.
(Edit Format, Thanks)

2

I’m not sure I can help but it’s almost impossible to help unless you put your configuration code in the correct format. after you post the code, highlight it and click the </> button at the top of the editor window.