 "Under the new ISU rules a complaint may be lodged only if a calculation (mathematical) error occurs.If the judges err in interpreting an element or its level of difficulty, it is considered a "human error" which can not be challenged...No lawyer would take on representing Plushenko's interests as no provision for challenging the judging under these circumstances exists," a source from the ROC was quoted as saying.Still, the head of Russia's Skating Federation, Valentin Piseev, came under heavy criticism at home for not standing up vigorously enough for Plushenko in the face of 'the judges' arbitrary scoring.'