Donor feature - Custom duel message

<a href="https://imgbb.com/"><img src="https://i.ibb.co/nfbZmTz/vv.png&quot; alt="vv" border="0"></a><br />
Can you make possible for Donor players to customize the proper duel message after accepting a duel?
Put a character limit like 20/50 idk, and if a player put offensive words in the message they get infracted.