Fragment BarChart in Modal is not updating - TornadoFX - kotlin

Question

I've created a Fragment to hold a BarChart and a ScrollPane - the end result will be a scrollable histogram.
I'm creating these new fragments in a seperate modal using the openModal method.
The problem that i'm having is that the BarChart doesn't seem to be updating when I call my loadData method, as shown below:
class Histogram : Fragment() {
override val root = vbox{
hgrow = Priority.ALWAYS
vgrow = Priority.ALWAYS
style{
minWidth = 1280.px
minHeight = 180.px
}
hbox{
hgrow = Priority.ALWAYS
}
}
private val bar = ScrollBar()
private var barChart = barchart("bar", CategoryAxis(), NumberAxis()){
barGap = 0.0
categoryGap = -1.0
hgrow = Priority.ALWAYS
vgrow = Priority.ALWAYS
style{
minWidth = 640.px
minHeight = 240.px
maxHeight = 480.px
}
isLegendVisible = false
}
private val s = XYChart.Series<String, Number>()
init{
root.add(barChart)
root.add(bar)
}
fun loadData(h: AlignmentHistogram){
s.data.add(XYChart.Data<String, Number>("asd", 2))
barChart.title = h.rname
/* for(i in 0..MAX_DATASET_SIZE){
if(i > h.histogram.size){
break
}
val data = XYChart.Data<String, Int>((h.firstPosition + i + 1).toString(), (h.histogram[i]))
println(data)
s.data.add(data)
}*/
s.data.add(XYChart.Data<String, Number>("asasdd", 5))
s.name = h.rname
barChart.data.add(s)
}
}
AlignmentHistogram is just a POJO with the data for the histogram and a few other details.
I'm calling the fragment with the following code:
val stage = Stage()
stage.title = "${pointer.rname} - ${selectedFile.file.name}"
val view = Histogram()
view.loadData(h)
val parent = StackPane()
stage.scene = Scene(parent, 1280.0, 360.0)
view.openModal(StageStyle.UTILITY, Modality.NONE, false, stage, false, true)
The result of this is just an empty histogram in a new modal, despite calling barChart.data.add(s)
Any ideas? Thanks in advance!

Answer 1

Nevermind, I solved it by passing the POJO in as the scope and putting the set-up code into the init block.
This article helped with the scope part:
Tornadofx - How to pass parameter to Fragment on every instance