@Override
        public void changed(ChangeEvent event, Actor actor) {
          String selChapter = (String) chapters.getSelected();

          if (selChapter != null && !selChapter.equals(Ctx.project.getSelectedChapter().getId())) {

            // Save the project when changing chapter
            try {
              Ctx.project.saveProject();
            } catch (IOException | TransformerException e1) {
              Ctx.msg.show(getStage(), "Error saving project", 3);
              EditorLogger.error(e1.getMessage());
            }

            try {

              if (selChapter != null) Ctx.project.loadChapter(selChapter);

              doc = Ctx.project.getSelectedChapter();

              addElements(doc, doc.getElement(), "scene");
            } catch (ParserConfigurationException | SAXException | IOException e1) {
              e1.printStackTrace();
            }
          }
        }