Khyber Pakhtunkhwa Chief Minister Ameer Haider Khan Hoti said the faces could be changed but not the system, report said on Saturday. Talking to media addressing a ceremony on the occasion of inaugural of Rescue 1122 here, he said Khyber Pakhtunkhwa government has reservations over Kerry-Lugar Bill. On this occasion, the Rescue 1122 personnel demonstrated the display of providing service in case an untoward incident happens. The CM said, 'If someone wants to bring about change, the Constitution has the way for it, adding the political parties are united in the province.