Rule 68. Offer of Judgment
(a) Making an Offer; Judgment on an Accepted Offer.
More than 10 days before the trial begins, a party defending against a claim may serve on an opposing party an offer to allow judgment on specified terms, with the costs then accrued. If, within 10 days after being served, the opposing party serves written notice accepting the offer, either party may then file the offer and notice of acceptance, plus proof of service. The clerk must then enter judgment.
This means that you have made an offer to settle the lawsuit.