One question of law raised by the defendant’s appeal relates to the effect of the receipt for $200, which purports to be in full payment for the Stoddard-Dayton car. The defendant contends that this document was conclusive evidence of payment. Such is not the law, under the facts disclosed by the record now before us. The receipt was prima facie evidence of the fact of payment, but was not conclusive that the plaintiff had received the $200. It was proper for him to offer parol evidence to vary or contradict *4the admission of payment contained therein. Holmes v. Brooks, 84 Conn. 512, 515, 516, 80 Atl. 773. A receipt is an admission only, and the general rule is that an admission, though evidence against the person who made it, is not conclusive except as to the person or persons who may have been misled or prejudiced by it. Clark v. Macdermott, 82 Conn. 572, 573, 574, 74 Atl. 686. The trial court has found that this instrument was not given because of the payment of any money to the plaintiff, but that, as claimed by the plaintiff, it was given for the sole purpose of aiding the defendant in the sale of the Stoddard-Dayton automobile after it had been taken back by him. There was ample evidence to support such a finding, and it does not appear that the defendant was in any way misled or prejudiced by the execution and delivery of this document.
The defendant also contends, in substance, in his reasons of appeal, that there is a material variance between the allegations of the amended complaint and the evidence. This action was brought upon the common counts. Subsequently a bill of particulars was filed which showed the sale of one automobile, and also contained an allegation claiming to recover for money had and received. It appears from the evidence that the first item of the bill of particulars was for the agreed price of the plaintiff’s Maxwell car, for which an allowance of 1100 in cash was agreed upon by the parties. The second item of the bill of particulars represented a claim for the money which the plaintiff contends he actually paid to the defendant, and which was to be repaid to the plaintiff under the agreement to rescind. The plaintiff might well have set forth, in his complaint, the terms of the first and second agreements. Practice Book (1908) § 129, p. 239. But a defect of form in the statement of a cause of action, unquestioned by motion *5or other pleading until after the trial of the case upon its merits, will not, in a case like the present one, be sufficient ground for a new trial. After the bill of particulars had been filed this informality existed. If the defendant desired to have the plaintiff set forth more fully the facts showing the alleged indebtedness of the defendant, he should have made a motion before filing his answer. This was not done. Brown v. Woodward, 75 Conn. 254, 257, 53 Atl. 112; Plumb v. Curtis, 66 Conn. 154, 165, 33 Atl. 998. The general issue was pleaded by the defendant and the case was tried upon its merits, and it is now too late for the defendant to question a formal defect in the statement of the plaintiff’s cause of action. Gargan v. Harris, 90 Conn. 188, 191, 192, 96 Atl. 940.
The defendant objected to the evidence of the plaintiff as to the terms of the first agreement, upon the ground that “no evidence of a long series of transactions prior to the date when the money was received, ” could properly be admitted. This evidence was admissible. It was the first step which led up to and was connected with the agreement to rescind. The agreement to rescind was the basis of the plaintiff’s cause of action. This fact, when taken in connection with other circumstances, rendered the existence of the agreement to rescind probable. If the evidence tends reasonably to establish the probability or improbability of the facts in controversy it is admissible. “Evidence is admitted not because it is shown to be competent, but because it is not shown to be incompetent.” Plumb v. Curtis, 66 Conn. 154, 166, 33 Atl. 998.
Thirteen assignments of error relate to the refusal of the trial court to find as requested by the defendant in his draft-finding. Three reasons of appeal are based upon the alleged action of the trial court in finding certain facts without evidence. The evidence is now be*6fore us under the provisions of § 797 of the General Statutes. Several of these assignments relate to facts which are of slight importance, and but three of the entire number were pursued in argument before this court. One exception is based upon the claim that the court erred in refusing to find that it was agreed by the plaintiff that his Maxwell car should be applied in payment of certain repairs which the defendant claims he had made for the plaintiff. An examination of the record discloses that the testimony upon this subject was conflicting, and that the court might well have reached the conclusion which it adopted upon this subject. Eudakaitis v. St. George’s Lithuanian Soc., 87 Conn. 1, 4, 86 Atl. 562. The other two exceptions relate to the conclusions of the trial court upon the effect of the receipt for $200. These questions have already been considered and need no further attention. Therefore the motion to correct is denied.
There is no error.
In this opinion the other judges concurred.