Object object = liste.get(index);
if (object instanceof FreegressiEvent){
FreegressiEvent e = (FreegressiEvent) object;
e.redo();
} else if (object instanceof TendanceCreatedEvent) {
TendanceCreatedEvent e = (TendanceCreatedEvent) object;
FitModel.getInstance().redoRegressionAdded(e);
} else if (object instanceof TendanceDeletedEvent) {
TendanceDeletedEvent e = (TendanceDeletedEvent) object;
FitModel.getInstance().redoRegressionDeleted(e);
} else if (object instanceof TendanceChangedEvent) {