A panel of the Commonwealth Court held that a pro se taxpayer waived all issues on appeal because he failed to comply with the lower court’s order directing him to file a statement of matters complained of on appeal. City of Philadelphia v. Tax Review Board, Appeal of Samuel Cook, No. 1070 C.D. 2013 (Pa. Commw. May 21, 2014) (unreported). Issues not stated in a statement are waived. Commonwealth v. Castillo, 888 A.2d 775 (Pa. 2005). Since the taxpayer filed no statement, all issues were waived.