In passing upon these points the evidence must be considered in a light most favorable to the jury's findings, considering only the evidence and inferences which support the verdict and rejecting the evidence and inferences which are contrary thereto. Burt v. Lochausen, supra; Leyva v. Pacheco, supra; Nathan Alterman Electric Co. v. Mason, 448 S.W.2d 524 (Tex.Civ.App. — San Antonio 1969, no writ). A judgment notwithstanding a jury verdict can only be upheld on appeal when a directed verdict would have been proper.