Greasy Fork

i have no idea how to make this thing work plz help me :(

Type the message you want to scroll into the chatbox, press "\" to save it, and then press ' to start scrolling.

i type my message i wanna to scroll and i press "\" then ' it dont worked why?

Not too sure. Any chance you use an OS besides Windows (e.g. Chrome OS) or use a non-chromium based browser like Firefox? Many scripts tend to break with certain configurations, which I assume is because of differences in web APIs...