sections with pineapple, reserving 1/3 cup liquid. In a 1-cup measure stir together cornstarch and cinnamon. Stir into reserved liquid. Micro-cook, uncovered, on 100% power for 1 to 1 1/2 minutes or till thickened and bubbly, stirring every 30 seconds. Drain liquid off ham and celery mixture. Stir in thickened mixture. Stir in orange sections with pineapple. Micro-cook, uncovered, on 100% power about 1 1/2 minutes or till heated through. Serve with hot cooked rice, if desired.