Set The Due Date Field On An Issue

import java.time.LocalDate

// Get a future date to set as the due date
def dueDate = LocalDate.now().plusDays(14)

Issues.getByKey('<IssueKeyHere>').update {
    setDueDate(dueDate)
    //You can also specify the date as a String parameter using this method and format:
    // setDueDate("2025-12-31")
}