I want to change the default background from the middle to another all-new background.

But your README.md and the topics here didn't figure out how to do that.

I tried to change the background in the middle of the game by trial and error, but nothing changed or I got an error.

I don't know how to set the configuration of jm_ebb_example.hjson.

I think it's as simple as adding something below the "configuration" in the json file to provide another background instead of the default, can you give me an example?

Thank you.

You'd add the configuration to the configuration file, then you'd use either a script call, or plugin command and call 'setConfiguration'

as a script call (for a theoretical configuration named "cruise"):

JM_EBB.setConfiguration("cruise")

as a plugin command:

EarthboundBackgrounds setConfiguration cruise

OK.

I don't know if it works, but I'll try again