Adding current scene to VSE (Blender 2.8) I dont know why this isn't working. I'm so new to Blender so forgive me.

I'm trying to reverse my animation:
https://youtu.be/jhXfWWeGVQg?t=333

I've got it all set up, I go into the Video Sequencer and I right click:


And this is what I get.  Why can't I add it? He does it in the video okay.
You can't add the current scene. Just Add a new Scene to the file and use the VSE from there now you can add the other Scene.