It substantially appears from the record that on the twentyrfirst day of February, 1900, plaintiff, Hall, bad $1,000 in bis bands, wbicb respondent Farnsworth claimed. Appellants, McNally and Harrington, denied Farns-worth’s right, thereto,' and themselves claimed the money. Plaintiff, Hall, not wishing to take the risk of paying the money to either party, filed this bill of interpleader against all the defendants. It further appears, in substance, that on May 4, 1899, McNally, Harrington and wife, and McDonald and wife, entered into an option contract in writing to sell the Antelope group of mines to Farnsworth. Each of the three contractors owned an undivided one-third interest in the mines. The consideration expressed was $30,000, and was to be paid in three payments. The last payment of $15,000 was to be made within six months. The option contract was placed in the hands of Hall, the plaintiff, and also a deed placed in escrow, to be delivered on payment of the money. A question arose between the parties as to the payment of commission. It is claimed by Farnsworth that an oral agreement was made between himself and McNally and Harrington whereby they agreed that Hall should deduct out of their share of the $15,000 the sum of $2,000 commission for the sale of the *608property, rather than, have tbe sale go under; tbat McDonald was not a party to sucb agreement, and refused to pay bis proportion of tbe commission. One thousand dollars of tbis commission was to be paid to John Free, and $1,000 to Farns-worth. Free afterwards waived bis claim. McNally and Harrington notified Hall not to deliver tbe deed until tbe full amount of $15,000 was paid. When due, Farnsworth tendered Hall $14,000, claiming no more was due. Hall refused to deliver tbe deed unless tbe full sum was paid. Thereupon Farnsworth paid tbe whole amount to Hall. Tbe appellants dispute tbe right as to tbe payment of tbe commission, and tbe testimony on tbat subject is in conflict. On full payment of the $15,000, Hall delivered tbe deed to Farnsworth, who recorded it, and thereupon paid McNally and Harrington tbe amount due them, less tbe $1,000, which was retained by him until a right to tbe same bad been determined. Harrington and McNally thereupon brought suit No. 2856 against Farns-worth to annul tbe deed, claiming tbat Hall bad no right to deliver the same until they were paid the full balance of tbe $15,000. Farnsworth answered, claiming be bad paid tbe full sum due on tbe option contract to Hall. Tbe court found the deed was properly delivered, and dismissed tbe complaint. McNally and Harrington thereupon demanded payment of tbe balance of $1,000 from Hall, and tbis suit was instituted by Hall to determine who was entitled to tbe money. After bearing tbe proof, tbe court found tbat Farnsworth was entitled to tbe money, and ordered its payment accordingly. From tbis judgment McNally and Harrington appeal.

1. Appellants claim tbat tbe court erred in receiving parol testimony tending to show tbe agreement between Farns-worth on tbe one part and McNally and Harrington on the other to allow the former $1,000 on account of commission, on. tbe ground tbat the original contract was in writing, free from ambiguity, and parol evidence was inadmissible to vary tbe *609terms thereof. The general doctrine, as frequently announced by this court, doubtless is that, in the absence of fraud, mistake, or ambiguity, parol evidence is not admissible to vary or explain the terms of a written instrument. Moyle v. Society, 16 Utah 69, 50 Pac. 806; Bank v. Foote, 12 Utah 156, 42 Pac. 205; Haskins v. Dern, 19 Utah 89, 56 Pac. 953. The respondent admits this rule to be correct, but says be does" not seek to vary its terms, or to claim under the written agreement; that be claims under an independent contract, whereby McNally and Harrington agreed to allow him $1,000' out of their share of the last payment of $15,000, and that, therefore, the principle above announced is inapplicable to the facts herein; that the contract sued upon is not the original contract for the sale of the property, but an independent contract between McNally and Harrington on the one part and Farnsworth on the other, and that they are different and other parties than those who signed the original contract, one of the parties to the original contract not being a party to this agreement. It is also claimed that the consideration named is not part of the contract, and that such consideration may be explained or varied. We are of the opinion that the evidence was properly admitted. The testimony introduced did not go to the promise itself, but to the consideration of the promise; and it did not relate to the promise made by all the parties to the written contract, but to an independent promise and consideration, agreed upon by only two of the several parties to the option contract with the respondent, as to the manner of paying the consideration. Parol evidence is admissible to show what the parties agreed might be done with the consideration, and in what manner the consideration named in a deed is to be paid, but not to change the contract itself. Becker v. Knudson, 86 Wis. 14, 56 N. W. 192. If Farnsworth’s testimony tends to change the contract itself, it should be re-*610jectecl. 2 Jones, Ev., see. 475. Formerly it was beld, although there was much conflict in the opinions, that the clause stating the consideration in a deed or other instrument under seal must be held conclusive on the parties like other parts of the instrument, and was not open to contradiction or explanation ; but inore modem decisions settle the rule that, although the consideration expressed in a deed is prima facie the sum to be paid, it may still be shown by the parties that the real consideration is different from that expressed in the written instrument. As said in Goodspeed v. Fuller, 46 Me. 147, 71 Am. Dec. 572: “The only effect of the consideration clause in a deed is to estop the grantor from alleging that it was executed without .consideration, and to prevent a resulting trust in the grantor. For every other purpose it may be varied or explained by parol proof.” Wilkinson v. Scott, 17 Mass. 249; Clapp v. Tirrell, 20 Pick. 247; Thayer v. Viles, 23 Vt. 494; White v. Miller, 22 Vt. 380; Bowen v. Bell, 20 Johns. 338, 11 Am. Dec. 286; 2 Jones, Ev., sec. 476; Velten v. Carmack (Or.), 31 Pac. 658, 20 L. R. A. 101; Cardinal v. Hadley, 158 Mass. 352, 33 N. E. 575. In Becker v. Knudson, 86 Wis. 14, 56 N. W. 192, it was held that parol evidence is admissible to show in wh'at manner the consideration named in a deed is to be paid. Schillinger v. McCann, 6 Me. 364; 2 Jones, Ev., sec. 476; Velten v. Carmack (Or.), 31 Pac. 658, 20 L. R. A. 101, and cases cited. In Burbank v. Gould, 15 Me. 118, it was held that the acknowledgment of payment of the consideration money in a deed of land does not preclude the grantor from showing by parol testimony that a part of the money was left in the hands of the grantee, to be paid by him to a third person, for the benefit of the grantor.

2. The appellants also contend that by reason of the proceedings and decree in Harrington and McNally against Farns-worth (No. 2856), wherein Farnsworth answered, and the court found that he had paid Hall the full amount of the *611money due on tbe contract, tbe latter is estopped and precluded from claiming said $1,000 in tbis action, and tbe rights of Harrington and McNally to said money are now res adjudicata, as well as tbe fact that tbe money was paid to and held by Hall for them. It is no doubt true, as held in Davis v. Wakelee, 156 U. S. 689, 15 Sup. Ct. 555, 39 L. Ed. 578: “It may be laid down as a general proposition, where a party assumes a certain position in a legal proceeding, and succeeds in maintaining that position, be may not thereafter, simply because his interests have changed, assume a cpntrary position, especially if it.be to tbe prejudice of the party who has acquiesced in the position formerly taken by him.” But, we do not find the facts, as shown by tbe record in case No. 2856, such as will bring the case under that rule. The purpose of that action was to set aside and cancel the deed executed by the mine owners to Earnsworth, and left with Hall in escrow, to be delivered to Earnsworth on the payment by him of the full consideration remaining unpaid. The court found, after a full hearing, that the plaintiffs had no right or title to tbe property named in tbe complaint, that Earnswortb was the owner of it, and that it was properly delivered by Hall to him. The real question in litigation was whether the deed was properly delivered to Earnsworth on payment by him to Hall. Hall had required Earnsworth to pay into his hands the full amount of $15,000 owing and unpaid on the contract, out of which Earnsworth claimed bis commission, before he would deliver to him the deed. Tbe commission was only to be paid out of the last payment of $15,000. It was not necessarily to be deducted until the $15,000 was paid; nor had Earnsworth the right to deduct it or segregate it. The contract of sale was an entirety. Eifteen thousand dollars was due to three persons— $5,000 to each — one of whom was not interested in the commission. When the amount was paid to Hall, the provisions of tbe contract were complied with and satisfied as between all *612the parties to it. Until the $15,000 was paid, the conditions of the contract were not complied with; but, as between Mc-Nally and Harrington, who had $10,000 interest in the last payment, and Earnsworth, something else remained to be done. It was the payment by Hall to Earnsworth of the $1,000 agreed to be paid him by McNally and Harrington out of their share of the payment. Hall paid it, as the court found he had a right to do under the facts found. Under such a state of facts, Earnsworth could properly allege in his answer that the full sum named in the contract had been paid to Hall. He could not obtain the deed, or perform his part of the contract, until the full sum was paid into Hall’s hands. It was left for Hall, who held the escrow, to make the division, and pay over the money, as agreed, rather than to Earnsworth. Neither in the court below, nor in this court on appeal, was any question made by either party that, because Earnsworth was named as grantee in the contract for the sale of the mines, he was not entitled to a commission for procuring said sale. Whether he was not acting for others does not clearly appear. In any event, this is not a jurisdictional question, and therefore) should not be raised by this court, on its own motion, when the parties herein have failed to raise it in either court, and content themselves by relying upon the issues raised in the record. If the appellants agreed to pay the commission, they are not in a position to revoke their agreement while accepting the benefits arising under it. • Under the facts we see nothing inconsistent in the position taken by Earnsworth; neither do we find the agreement void under the statute of frauds. The testimony was conflicting and contradictory. Counsel for the appellants do not, in their brief, rely upon or discuss the errors assigned that there is no evidence to sustain the findings or decree, and we have, therefore, taken .the facts as found by the trial court to be correct.

The writer of this opinion wishes to' express his apprecia*613tion for tbe able manner'in wbicb tbe case bas been argued and submitted by counsel in tbeir respective briefs. Tbe judgment of tbe district court is affirmed, witb costs.

(dissenting). — It appears from tbe record that Pbilo T. Earnswortb was tbe purchaser of tbe mining property described in tbe deed placed in escrow witb tbe plaintiff, and that said deed in terms conveyed said mining property to bim. In bis answer be alleged that tbe “deed was to be beld by tbe plaintiff, ~W. 0. Hall, and delivered to bim on tbe fourth day of November, 1899, upon tbe complete and final payment of tbe purchase price of said property.” Until the final payment was made, be was not, by tbe terms of tbe written contract, subject to wbicb tbe plaintiff beld tbe deed, entitled to have tbe same delivered to bim. He made tbe payments provided for in said written contract, and when made, and tbe deed was delivered, it is clear that tbe grantors became tbe^ owners of all of tbe money so paid to tbe plaintiffs, if proof of tbe contemporaneous verbal agreement between Farnsworth and McNally and Harrington was admissible. Farnsworth admits, as shown by tbe quotation of bis answer, hereinbefore made, that under tbe written contract be was to pay to tbe bolder of tbe deed in escrow the full purchase price of tbe property. Tbe contemporaneous verbal agreement varies tbe written contract in that respect, and therefore it was error to admit evidence in proof of it. Again; as Farnsworth was tbe purchaser and grantee of tbe property, tbe allowance of a commission is an anomaly. “Tbe term 'commission’ legally imports a sum allowed as compensation to a servant, factor, or agent who manages tbe affairs of others in recompense for bis services.” 6 Am. and Eng. Enc. Law (2 Ed.), 228; Bouv. Law Diet.. 361.