Custom image for the "back to top" plug in?

[Capt Anita Thomas]

Forum URL: solarishumanus.boards.net/

Hi,

I have a plug in, its called "Back to Top"

And the arrow image in the plug in is no longer there .  There is an image message instead:  

When I followed the link, this is what I saw in the URL

i.imgur.com/removed.png

My question, is how can I put a custom image for this plug in?

Thank you

[Capt Anita Thomas]

I did explore it before posting and couldn't figure it out.

But after I posted,    I found out to do it!

Thank you for your time!