Application.LoadLevel("name") help!

I have named my scenes as “Level1”, “Level2” and so on.
so I have tried when the game finishes to do Application.LoadLevel(“Level2”);
it says "Level ‘Level2’ (-1) couldn’t be loaded because it has not been added to the build settings.
How can I add Level2(scene) and more levels in build settings?
help please!

Press Control + Shift + B to open the Build Settings (Or go to File → Build Settings)

From there just drag all your scenes from the project panel into the ‘Scenes In Build’ section.