Hello, have you already modified the file?
I have already checked it out and made the necessary alterations.
Since it was saved with my current unreleased version of the plugin it has the potential to give you errors when opening. So I would want to hold off until the next update releases which will be later this week.
If you absolutely cannot wait here it is, but you've been warned: https://www.dropbox.com/scl/fi/ml2kqs716uotxqtrp8o06/forJDev.capx?rlkey=ildk4l8b...
I still left a little challenge in there for you. While jumping is implemented there are no checks for hitting something above you, so you will currently get pushed out when doing that. Once you understand the events you should be able to add that functionality yourself. Cheers!