In Haskins v. Holmes (1967) 252 Cal.App.2d 580, the court was limited to the facts established by the trial judge's findings because the appeal was on the clerk's transcript. "These facts, for purposes of appellate review, are undisputed and presumed to be sufficient to sustain the findings, no challenge thereto having been made -- thus, there is no issue either of defendant's liability or of damage suffered by plaintiff. If then, we are to disturb the award, it must be on the theory that the uncontradicted facts before us demonstrate that it is insufficient as a matter of law." (Id. at p. 585.)