Where the defendant is charged with both robbery and aggravated battery based on a single physical violent act, he cannot be convicted on both charges as it would violate the one-act, one-crime principle.The 1st District Appellate Court affirmed in part and vacated in part a decision by Cook County Associate Judge Michele M. Pitman.Around 9 a.m. on Nov. 16, 2009, Deborah Halloran and William Burtner, 65, were at the Veterans of Foreign Wars post in south suburban Midlothian, where Burtner served as commander and Halloran …