I can not set the autothrotle of the Airbus Evolution Vol 1 Wilco. After takeoff I set the Ap1 and the airplane does not follow the speed programmed in the FMC (250 knots climb and 270 knots cruize). The autothrotle is on connected. I have searched on the internet and I did not found some solution. Can anyone help me? I have read the manual and I did not found an answer to this. My operating system is Windows 8.