public void initialize(URL location, ResourceBundle resources) {
    txtFieldGeldEingabe.textProperty().bindBidirectional(viewModel.geldEingabe());
    txtFieldZeitEingabe.textProperty().bindBidirectional(viewModel.zeitEinagabe());
    labelQualitaet.textProperty().bindBidirectional(viewModel.qualitaetText());
    labelZeit.textProperty().bindBidirectional(viewModel.zeitText());
    labelSkill.textProperty().bindBidirectional(viewModel.skillText());
    labelGehalt.textProperty().bindBidirectional(viewModel.gehaltText());
    labelGeld.textProperty().bindBidirectional(viewModel.geldText());
    labelGesundheit.textProperty().bindBidirectional(viewModel.gesundheitText());
    labelMotivation.textProperty().bindBidirectional(viewModel.motivationText());
    SliderGehalt.valueProperty().bindBidirectional(viewModel.gehaltProperty());
    SliderGehalt.setValue(1500);
    SliderGehalt.setShowTickMarks(false);
    SliderGehalt.setMajorTickUnit(1);
    SliderGehalt.setMinorTickCount(0);
    SliderGehalt.setBlockIncrement(100);
    SliderGehalt.setSnapToTicks(true);

    labelNeuesGehalt.textProperty().bind(SliderGehalt.valueProperty().asString("%.0f"));

    buttonStart.setOnAction(
        event -> {
          buttonNachsteRunde.setDisable(false);
          buttonStart.setDisable(true);
          txtFieldGeldEingabe.setDisable(true);
          txtFieldZeitEingabe.setDisable(true);
          viewModel.startRound();
        });

    buttonNachsteRunde.setOnAction(
        event -> {
          RadioButton rb = (RadioButton) ToggleGroupSelect.getSelectedToggle();
          viewModel.nextRound(rb.getText());
        });

    viewModel.setButtonNaechsteRunde(buttonNachsteRunde);
    viewModel.setButtonStart(buttonStart);
    viewModel.setTxtFieldGeldEingabe(txtFieldGeldEingabe);
    viewModel.setTxtFieldZeitEingabe(txtFieldZeitEingabe);
  }