What is happening right now?

i am trying to get the int vie from Calamitas and show it in my death screan(EcranDeMort) but i cant get it with getObjects(Calamitas.class).get(vie); because it isn't in the world EcranDeMort. my code from my EcranDeMort: import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) /** * Write a description of class ecrandemort here. * * @author (your name) * @version (a version number or a date) */ public class EcranDeMort extends World { MessageDeMort MessageMort; int vie = getObjects(Calamitas.class).get(vie); /** * Constructor for objects of class ecrandemort. * */ public EcranDeMort() { // Create a new world with 600x400 cells with a cell size of 1x1 pixels. super(800, 800, 1); MessageMort = new MessageDeMort(); addObject(MessageMort,400,200); showText("Il restais ", 400, 400); } } the relevent code from Calamitas: Actor Bl = (Actor)getWorld().getObjects(Blahaj.class).get(0); if (Bl.getImage().getTransparency() == 0){ setRotation(0); peuAttaque = false; rep = 40; musiquePhase1.stop(); musiquePhase2.stop(); if(peuJouerSon == true){ tuAPerdu.play(); peuJouerSon = false; } if(timer > animation + 100 && tuAPerdu.isPlaying() && rep > 0){ animation = timer; setLocation(getX(),getY()+1); rep--; }else if(timer > animation + 100 && ! tuAPerdu.isPlaying() && sonDisparition == true){ im.setTransparency(0); disparition.play(); for(int j = 0; j<20; j++){ getWorld().addObject(new particule(), getX(), getY()); } sonDisparition = false; animation = timer; }else if(timer > animation + 1000 && sonDisparition == false){ EcranDeMort EcranDeMort = new EcranDeMort(); Greenfoot.setWorld(EcranDeMort); } } tanks in advance