Thanx for the replay johnny,
But it didnt work. On the project menu every scene including its solids and text are in a different folder. for example scene1.aep scene2.aep and so on. When I dublicate the scene1 folder its name changes to (scene1.aep 2) but the content stays the same. So when I put the scene from the dublicated folder to the timeline I than change its text, it changes the text of the original one also.maybe this script/plugin you advised will work since it automaticaly renames its content also. But I do this just for a school presentation and I have to buy that plugin.