Task<Void> thread = new Task<Void>() {
    @Override
    protected Void call() throws Exception {
        return null;
    }
};

for(int i=0;i<10;i++) {
    Label labe11 = new Label("Thread");
    Label labe12 = new Label("0/910000");
    this.completeGrid.add(labe11, 0, i);
    this.completeGrid.add(labe12, 1, i);
    labe12.textProperty().bind(thread.messageProperty());
}
new Thread(thread).start();