Is it possible to load a MusicXML to Lessons -> Play Scores?

[Inqb8tr-jp]

Hello.

I want to play guitar with "Lessons -> Play Scores" with my own .mxl file created by MusuScore4.
But currently Load button of "Lessons -> Play Scores" only accept .nel file.
Is it possible to load .mxl file or create .nel file to play guitar with?
Please teach me how to create custom .nel file.