And one other quick question. When I create my UI. What is the recommended way to deal with components that are included several times. I wrote some wrapper function where I call a fieldset, vbox etc in it and simply thought I could now run the function and the filedset and vbox is added then, but I think there seem to be more magic to return it in some way. Hard when you start with Kotlin and TornadiFX at the same time frm scratch 😉