Any advice on editing some Velo? I just want to make sure I don't break a clients site.

I know Wix pretty well, I do not know Velo at all though. I had a custom donation button added to this charities website where the customer can enter any dollar amount they want and donate it. Everything has been working perfectly. However, now I need to add an additional field where the person donating can enter a message or name with the title “donation made in memory/honor of”.
Here is an image of the current code, it has to be an image because this forum won’t let me post it since it has a link, even though I removed the link:


The current field where the customer enters their donation amount is labled #input2 so if I add a new field to the lightbox and name it #input3 what code would I need to add to the current code so when a donation is made the site admin gets the name of the person the donation is to?
Here is what I think would work, if someone could verify if that is correct, I would greatly appreciate it:

Hi Mate!

I noticed some corrections in your Code.

You can connect with me at workspace.psr@gmail.com to know more about the Corrections.