tornadoFx runAsync {} ui {} not working

Question

What I need is to call same controller method from two different views. For example I need to call

controller.getProducts()

from ProductView.class as well as from StockView.class I call this controller.getProducts() to populate data inside a tableView and comboBox using

runAsync{
    controller.getProducts()
}ui{
    items = it
}

But this works only for one time. Whichever view I visit first this works. But for the second view this does not work. I would like to mention , this bellow code works .

    runAsync{
val it = controller.getProducts()
runLater{
items =it
}

Please solve my puzzle