Editing a copy solid

Hello, i`m new in solidworks and i`m having a problem, someone could help me ?
i drawed a piece and i`m gonna use this same piece some times in the same project, so i copy and paste it when i need to use it again in the project, but some os them i need to rotate, but when i do so i rotate all of them (copies and pastes) cuz i copied or dont know why, how can i rotate one copy without rotate other copies and original drawing ?

thank you !

SolidworksGeneral