168 S.E.2d 179 KNIGHT v. WILLIAM SUMMERLIN COMPANY. 44392.Court of Appeals of Georgia.ARGUED APRIL 9, 1969. DECIDED APRIL 24, 1969. An unconditional promise to pay cannot be converted into a conditional promise by pleading or proof of a contemporaneous oral agreement to do so. Page 576 ARGUED APRIL 9, 1969 — DECIDED APRIL 24, 1969. […]