Application.LoadLevel is missing - Help please!

So, to kill some time for my game, I recently purchased a menu from the Unity Asset Store. But when I customized it and everything, I discovered that the menu was missing “Application.LoadLevel” (aka. what starts and loads a level in your game). Anyway, I’m more confused than I am frustrated on what to do to solve this problem. Can somebody please help?

Below I have added a screenshot of where Application.LoadLevel is supposed to be in the menu (the space where it says “OnClick () - List is empty”)

Application.LoadLevel is obsolete, use SceneManager.LoadScene instead.