Videotapes from a Seminole AmSouth bank show that a robber's disguise works only if it is kept on. A gunman who held up the branch Monday at 7800 113th St. N apparently was unaware he was captured on film. He wore a Santa-like beard and hat when he demanded money from a teller. As he left, he pulled off his disguise, revealing his face. The man was described as in his 40s, 6 feet 2 and 220 pounds. Call the Pinellas County Sheriff's Office at 582-6200 with information.