IntelliJ and SceneBuilder code sync

        Hi everyone.

I am new to Java and IntelliJ. I'm testing forms with JavaFX and SceneBuilder.
I created a "test form", it show all right.

My question is, when I drop a new control in SceneBuilder, affect it a "name" (fx:id),
why doesn't my controller code it IntelliJ doesn't gets updated ? (the controller.java class)

I'm trying to add a simple checkbox.

here is the code of my controller class :
package sample :

import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.TextArea;
import javafx.scene.input.MouseEvent;


public class Controller {

    @FXML
    private ResourceBundle resources;

    @FXML
    private URL location;

    @FXML
    private Button MyButton;

    @FXML
    private TextArea MyText;


    @FXML
    void MyButtonClick(MouseEvent event)
    {
        MyText.appendText("coucou \n");
    }

    @FXML
    void initialize() {
        assert MyButton != null : "fx:id=\"MyButton\" was not injected: check your FXML file 'sample.fxml'.";
        assert MyText != null : "fx:id=\"MyText\" was not injected: check your FXML file 'sample.fxml'.";


    }

}

Eric Walker