Hi mekonbekon, thank you for getting back to me. I have been postponing this issue because I thought it would be fairly easily solved, but I now see it might be more complicated than I thought. I have been focusing on creating content and storing it in the form of a 2D array in Excel, although I still intend to convert it to a JSON 3D array (to use in the framework that you provided, thanks again for that).
Adding square brackets to each entry and getting to a correct syntax in JSON might be tricky. Do you know a better way to handle the data of a 3D array, that can then be converted to JSON? Or should I just become familiar with the JSON format and store the data in a .txt file?