Is there any error in principle or any consideration or an irrelevant factor?

The appellants did not point directly to any error in principle or any consideration or an irrelevant factor, failure to consider a relevant factor, or overemphasis on some factor by the trial judge. They confined their submission to a recitation of authorities setting out the test for the granting of leave to amend to include a limitation defence. By reference to their factum and inference from the authorities to which their counsel referred I surmise the appellants are complaining the trial judge erred in principle when she allowed an amendment to plead a limitation defence that put the plaintiff "in an unfair position" without sufficient evidence "to support the means of knowledge test." (van Halderen v. Campney & Murphy, 2000 BCCA 234)