Letters written by Mrs. Enyart before making the will at times indicated that she intended to treat the three sisters alike; at other times a contrary purpose was shown. Neither of these advance statements created any obligation. She had a right to give more property to the Jordans than to the others if she so desired. 1 Page, Wills (2 ed.) § 745; In re Will of Nagel, 167 Minn. 63, 208 N.W. 425; In re Hess' Will, 48 Minn. 504, 51 N.W. 614, 31 A.S.R. 665. An opportunity to exercise undue influence does not establish it, especially in cases where, as here, there was no evidence of a fiduciary or confidential relationship. 6 Dunnell, Minn. Dig. (2 ed.) § 10239, and cases cited. Although but a small portion of the facts in this case have been detailed, the important and controlling ones have; a further recital is not necessary. Suffice it to say that the decision of the trial court on all points involved had the necessary support in the evidence and under the familiar rule must be sustained.