Confirmation/Error Messages

Hi,

Can I include fields in the message section please?

e.g. Sender’s message was sent successfully …
Thank you [your-name] your message was sent successfully.

Can I include coding in the message boxes?

What is the character limit for these message responses?

I’m wanting to use it for booking places at an event so can I effectively get it to say…
Thank you [your-name]. You have successfully booked [places] for [child-name] for the event. We look forward to seeing you. We have also sent you a confirmation email.

Thank you.

The page I need help with: [log in to see the link]