SetFullscreen error

Unity Engine
,
1

I am getting an error when it comes to:

 public void SetFullscreen(bool isFullscreen)
    {
        for (int i =0; i < resolutionToggles.Length; i++)
        {
            resolutionToggles[i].IsInteractable = !isFullscreen; //this is my error
        }

        if(isFullscreen)
        {
            Resolution[] allResolutions = Screen.resolutions;
            Resolution maxResolution = allResolutions[allResolutions.Length - 1];
            Screen.SetResolution(maxResolution.width, maxResolution.height, true);
        }
        else
        {
            SetScreenResolution(activeScreenResIndex);
        }
    }
2

Nevermind just figured it out. The IsIneractable was a method.