My Plugins is not working on Musescore4 (especially "cmd()")

I modified a plugin that I used without any issues in MuseScore 3 for MuseScore 4, but Cmd("next-measure") does not work.

The plugin appears in the menu of MuseScore 4, and I believe it is recognized as a plugin. Also, as far as I can see, Cmd("Copy"), Cmd("Paste"), Cmd("Transpose-up"), and Cmd("Transpose-down") all worked correctly.

It did not work in both MuseScore 4.4 and 4.3. Does this mean that MuseScore 4 does not support certain commands?

I have been using MuseScore for about 10 years and finally decided to try creating a plugin. I am a programming beginner and have just started learning Javascript, so if my code is incorrect, I would appreciate it if you could point it out! (I use a lot of transposition commands because I want to write the score in Bb) If I cannot resolve this issue, I plan to continue using MuseScore 3 for the time being.

Here is my environment: PC: MacBook Air (M1) OS: macOS 15.1