Problem with Timer object

Hi bros. I am encountering with a problem about Timer .
I am simulating a elevator using Java GUI . My elevator includes an
rectangular elevator and a ButtonPanel (an array of buttons which
indicate the floors ) . The elevator runs up and down between the
storeys . What i want is when i press a button in the buttonPanel ie
button number 5 , the elevator will stop when it reachs storey 5 for
an amount of time and continue moving after that . I use timer but the
elevator can't stop .Here is the code .please help me . Thanks in
advance .

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

//The main class
public class Elevator_Simulation extends JFrame{
  public JLabel state; // display the state of the elevator
  private JLabel id; //your name and group
  public ButtonPanel control; //the button control panel
  private Elevator elevator; // the elevator area
  private final int width = 400;
  private final int height = 500;
  public Container elevatorPanel;
  private int delay ;

  //constructor
  public Elevator_Simulation() {
  // Create GUI
   setTitle("Elvator Simulation");
   setSize(width,height);
   setVisible(true);
        setDefaultCloseOperation(EXIT_ON_CLOSE); buildPanel();
        elevator = new Elevator(this);
        elevator.beginOperation();

  }

  public void buildPanel(){
   id = new JLabel("MyName SE6",JLabel.CENTER);
                    elevatorPanel = getContentPane();
        control = new ButtonPanel();
        elevatorPanel.setLayout(new BorderLayout());
        elevatorPanel.add(control,BorderLayout.WEST);
                    elevatorPanel.add(id,BorderLayout.NORTH);
  }
 ....
  // Main method
  public static void main(String[] args) throws InterruptedException{
  // Create a frame and display it
   new Elevator_Simulation();
  }

} //the end of Elevator_Simulation class

// The elevator class draws the elevator area and simulates elevator
movement

  class Elevator extends JPanel implements ActionListener {
  // parameters ....
  private Timer tm ;
  private final int delay = 200 ;
  final private int speed = 40 ;

  private Elevator_Simulation app;
  // Paint elevator area

  public Elevator(Elevator_Simulation app){
         // set the parameters of the elevator
  }
  public void beginOperation(){
    tm = new Timer(delay/speed,this);
   tm.start();
  }
  public void paintComponent(Graphics g) {
          // paint the elevator
   }

  //Handle the timer events
  public void actionPerformed(ActionEvent e) {
    tm.setDelay(delay/speed);
  height = getHeight()/8;
  int curFloor = 7-yco/height ;
   if (yco % height == 0 && app.control.bp[curFloor])
  {
    tm.stop();
    new Pause();
    tm.start();
       app.control.restoreButtonState(curFloor);
                  }
              .....
      }

  // i use this class to pause the elevator
  class Pause implements ActionListener
  {
           Timer tmpTimer ;
           int times;
           public Pause(){
   int delayTime = (delay*50)/speed; tmpTimer = new
Timer(delayTime,this); times = 1;
           }
           public void actionPerformed(ActionEvent e) {
           if (times==2){
            tmpTimer.stop();
                }
            else times++;
            }
    }
 } // end of the elevator class