How to make unlimited AnchorPane's in JavaFX

Question

I'm trying to create a program that will contains many blocks (AnchorPane's) using JavaFX. My problem is that when I created one block others don't appear because I created only one FXML block with ID and others thinks that they already exists. But I need to create function in controller class that will work when you tap button in menu. Here is my controller code:

public class HelloController {
    @FXML
    private AnchorPane plot = new AnchorPane();

    @FXML
    void AddPlotBlock(ActionEvent event) {
        this.plot.setMinHeight(110.0D);
        this.plot.setMinWidth(250.0D);
        this.plot.setStyle("-fx-background-color: grey");
    }

And FXML:

<AnchorPane maxHeight="-1.0" maxWidth="-1.0" prefHeight="-1.0" prefWidth="-1.0" VBox.vgrow="ALWAYS" style="-fx-background-color: #301934;">
        <children>
            <AnchorPane fx:id="plot"/>
        </children>
</AnchorPane>

Does anyone know how to place many panes?

Answer 1

Okay, I found how to fix it. To make this you need to change id in FXML main file not in children but in pane (my AnchorPane) and then make AnchorPane with exact name in controller. Then you can initialyze your blocks or anything inside controller and add it in pane. Here is my solution.

controller >

plots.getChildren().add(card); // plots is id

upper command is inside button click.

@FXML
private AnchorPane plot = new AnchorPane();

@FXML
public AnchorPane plots;

plot is objects. You can place infinite objects (if you have memory)

plots is id of anchorpane.

FXML anchorpane

<AnchorPane fx:id="plots" maxHeight="-1.0" maxWidth="-1.0" prefHeight="-1.0" prefWidth="-1.0" VBox.vgrow="ALWAYS" style="-fx-background-color: #301934;" />

So anchorpane have id and you add child arguments (plot) to main pane (plots). Thanks for commenting, and rules.