RadioButtonSelectedOrNot[index] = bind radioButton[index].selected problem

Question

Could someone please tell me why *radioButtonSelectedOrNot[index] = bind radioButton[index].selected;* is not working?
import javafx.stage.*;
import javafx.scene.*;
import javafx.scene.layout.*;
import javafx.scene.control.*;
def toggleGroup = ToggleGroup {};
var radioButton: RadioButton[];
var message: String[];
var radioButtonSelectedOrNot: Boolean[];
message[0] = "Display a slide show of car images.";
message[1] = "Display the Car Race Simulation";
message[2] = "Exit";
for (index in [0..2]) radioButton[index] = RadioButton
    toggleGroup: toggleGroup
    text: "{index + 1} {message[index]}"
for(index in [0..2])
    radioButtonSelectedOrNot[index] = bind radioButton[index].selected; // WHY ISN'T THIS WORKING?!
def stage1 = Stage
    scene: Scene
        width: 600
        height: 400
        content:
            VBox
                spacing: 5
                content:
                    radioButton[0],
                    radioButton[1],
                    radioButton[2]
}Any input would be greatly appreciated!
Thanks in advance!

Answer 1

Maybe this will help you.
import javafx.stage.*;
import javafx.scene.*;
import javafx.scene.layout.*;
import javafx.scene.control.*;
def toggleGroup = ToggleGroup {};
var message: String[] = ["Display a slide show of car images.",
            "Display the Car Race Simulation",
            "Exit"];
var radioButton: RadioButton[] = [for (index in [0..2]) { RadioButton {
                    toggleGroup: toggleGroup
                    text: "{index + 1} {message[index]}"
var radioButtonSelectedOrNot: Boolean[] = bind for (index in [0..2]) { radioButton[index].selected };
def stage1 = Stage {
            scene: Scene {
                width: 600
                height: 400
                content: [
                    VBox {
                        spacing: 5
                        content: [
                            radioButton
        }