Animator is not playing an AnimatorController (218133)

[kyomazunki]

In this script I made this part of the script is not playing an animation.

private void Update () {
        if (Input.GetKeyDown(KeyCode.Q))
        {
            if (CctvMenu.gameObject.activeInHierarchy == false)
            {
                Pause();
                Animator menuopener = Backgrounded.GetComponent<Animator>();
                menuopener.SetBool("on", true);
            }
        }
    }
    public void Pause()
    {
        if (canvas.gameObject.activeInHierarchy == false)
        {
            canvas.gameObject.SetActive(true);
            Time.timeScale = 0;
            Player.GetComponent<FirstPersonController>().enabled = false;
            Cursor.lockState = CursorLockMode.None;
        }
        else
        {
            canvas.gameObject.SetActive(false);
            Time.timeScale = 1;
            Player.GetComponent<FirstPersonController>().enabled = true;
            Cursor.lockState = CursorLockMode.Locked;
        }
    }

The lines that or broken are these ones.

Animator menuopener = Backgrounded.GetComponent<Animator>();
menuopener.SetBool("on", true);

I have both of these exact lines in another script and they work perfectly fine., but in this script they are dun broke. Any help would be appreciated.

[ZachVille]

What does your Animator on the object look like? Are you sure you have put the AnimatorController the the slot for it on the Animator?
@kyomazunki