Danny owes Tim $$1,000.$ As per the terms of their debt agreement, payment was to be made on March $1$st$.$ On March $2$nd$,$ Tim writes to Danny and states the following in his letter: "I do not want to sue you, but I need the money immediately. If you pay me $$750$ within one week of the date of this letter, I will release you from full payment of the debt." Danny sends Tim a check for the $$750$ within the week. However, Tim does not give Danny a discharge for the rest of the debt. Soon afterwards, Tim sues Danny for the $$250.$

$1.$ Judgment on this debt action should be for: