public List<Integer> getResponse() {
		
		if (result == -1 || result == JOptionPane.CANCEL_OPTION || this.options == null) {
			return null;
		}
		
		List<Integer> response = new ArrayList<Integer>();
		
		int i = 0;
		for (JCheckBox cb : this.checkBoxes) {
			if (cb.isSelected()) {
				response.add(i);
			}
			++i;
		}
    	
    	return response;
    }