Can't invert y axis on javafx at all. :/

JavaFX_DrawSomething.java

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Cursor;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.input.MouseEvent;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.stage.Stage;
import javafx.scene.chart.NumberAxis;
public class JavaFX_DrawSomething extends Application {
    double orgSceneX, orgSceneY;
    double orgTranslateX, orgTranslateY;
    ImageView imageView0;
    ImageView imageView2;
    ImageView imageView3;
    ImageView imageView4;
    Image imagex;
     NumberAxis yAxis;
     NumberAxis xAxis;
    Image imagey;
    String files[];
    LineChart<Number,Number> lineChart;
    Group root;
    @Override
    public void start(Stage primaryStage) throws FileNotFoundException
    {
      Rectangle rect0 = new Rectangle(150, 50, 100, 150);
      rect0.setFill(Color.TRANSPARENT);
      rect0.setStroke(Color.BLACK);
      Rectangle rect1 = new Rectangle(250, 50,100, 150);
      rect1.setFill(Color.TRANSPARENT);
      rect1.setStroke(Color.BLACK);
      Rectangle rect2 = new Rectangle(350, 50,100, 150);
      rect2.setFill(Color.TRANSPARENT);
      rect2.setStroke(Color.BLACK);
      Rectangle rect3 = new Rectangle(150, 200,100, 150);
      rect3.setFill(Color.TRANSPARENT);
      rect3.setStroke(Color.BLACK);
      Rectangle rect4 = new Rectangle(250, 200,100, 150);
      rect4.setFill(Color.TRANSPARENT);
      rect4.setStroke(Color.BLACK);
      Rectangle rect5 = new Rectangle(350, 200, 100,150);
      rect5.setFill(Color.TRANSPARENT);
      rect5.setStroke(Color.BLACK);
      Rectangle rect6 = new Rectangle(150, 350,100, 150);
      rect6.setFill(Color.TRANSPARENT);
      rect6.setStroke(Color.BLACK);
      Rectangle rect7 = new Rectangle(250, 350,100, 150);
      rect7.setFill(Color.TRANSPARENT);
      rect7.setStroke(Color.BLACK);
      Rectangle rect8 = new Rectangle(350, 350, 100,150);
      rect8.setFill(Color.TRANSPARENT);
      rect8.setStroke(Color.BLACK);
      imagex = new Image(new FileInputStream("/Users/baalajimaestro/Downloads/Lol/img1.png"));
      Image image = new Image(new FileInputStream("/Users/baalajimaestro/Downloads/Lol/blank.jpg"));
      imageView0 = new ImageView(imagex);
      imageView4 = new ImageView(image);
      imageView4.setX(0);
      imageView4.setY(0);
      imageView4.setFitHeight(150);
      imageView4.setFitWidth(100);
imageView4.setCursor(Cursor.HAND);
imageView4.setOnMouseDragged(circleOnMouseDraggedEventHandler);
      imageView0.setX(500);
      imageView0.setY(3);
      imageView0.setFitHeight(150);
      imageView0.setFitWidth(100);
      imageView0.setCursor(Cursor.HAND);
     imageView0.setOnMouseDragged(circleOnMouseDraggedEventHandler);
      imagey = new Image(new FileInputStream("/Users/baalajimaestro/Downloads/Lol/img2.png"));
     imageView2 = new ImageView(imagey);
     imageView3 = new ImageView(image);
     imageView2.setX(500);
     imageView2.setY(200);
     iggggg=new Image(new FileInputStream("/Users/baalajimaestro/Downloads/tester_ruler.jpg"))
    ImageView ruler = new ImageView(iggggg);
     ruler.setX(10);
     ruler.setY(10);
     igg=new Image(new FileInputStream("/Users/baalajimaestro/Downloads/tester_ruler_2.jpg"))
     ImageView ruler1 = new ImageView(igg);
      ruler1.setX(10);
      ruler1.setY(10);
     imageView2.setFitHeight(150);
     imageView2.setFitWidth(100);
     imageView3.setX(0);
     imageView3.setY(0);
     imageView3.setFitHeight(150);
     imageView3.setFitWidth(100);
     imageView2.setCursor(Cursor.HAND);
    imageView2.setOnMouseDragged(circleOnMouseDraggedEventHandler);
    yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis) {
       @Override
       public String toString(Number value) {
           // note we are printing minus value
           return String.format("%7.1f", -value.doubleValue());
       }
   });
        root = new Group();
        root.getChildren().addAll(imageView0,imageView2,rect0,rect1,rect2,rect3,rect4,rect5,rect6,rect7,rect8,ruler,ruler1);
        primaryStage.setResizable(false);
        primaryStage.setScene(new Scene(root,900,1000));
        primaryStage.setTitle(":)");
        primaryStage.show();
    }
    public static void main(String[] args) {
        launch(args);
    }
    EventHandler<MouseEvent> circleOnMouseDraggedEventHandler =
        new EventHandler<MouseEvent>() {
        @Override
        public void handle(MouseEvent t) {
            double offsetX = t.getSceneX() - orgSceneX;
            double offsetY = t.getSceneY() - orgSceneY;
            double newTranslateX = orgTranslateX + offsetX;
            double newTranslateY = orgTranslateY + offsetY;
            ////////////For logging & testing purpose
           //////////////////////// System.out.println(newTranslateX+"   "+newTranslateY);
         if(t.getSource()==imageView0)
          {
            imageView3 = new ImageView(imagex);
            imageView3.setX(500);
            imageView3.setY(3);
            imageView3.setFitHeight(150);
      imageView3.setFitWidth(100);
      imageView3.setCursor(Cursor.HAND);
     imageView3.setOnMouseDragged(circleOnMouseDraggedEventHandler);
     root.getChildren().addAll(imageView3);
         imageView0.setX(newTranslateX);
        imageView0.setY(newTranslateY);
        }
        if(t.getSource()==imageView3)
        {
             imageView3.setX(newTranslateX);
             imageView3.setY(newTranslateY);
        }
        if(t.getSource()==imageView4)
        {
             imageView4.setX(newTranslateX);
             imageView4.setY(newTranslateY);
        }
        if(t.getSource()==imageView2)
        {
          imageView4 = new ImageView(imagey);
          imageView4.setX(500);
           imageView4.setY(200);
          imageView4.setFitHeight(150);
    imageView4.setFitWidth(100);
    imageView4.setCursor(Cursor.HAND);
   imageView4.setOnMouseDragged(circleOnMouseDraggedEventHandler);
   root.getChildren().addAll(imageView4);
       imageView2.setX(newTranslateX);
      imageView2.setY(newTranslateY);
      }
    }
    };
}