EDIT

        final Button showIdInVocabulary = new Button(child, SWT.CHECK);

        boolean isShowIdInVocabulary = PreferencesUtil.getPreferenceStore().getBoolean(IPreferenceKeys.CHECKLIST_ID_IN_VOCABULARY);

        showIdInVocabulary.setText("Show Id in Vocabulary instead of full title of the areas");

        showIdInVocabulary.setSelection(isShowIdInVocabulary);

        showIdInVocabulary.addSelectionListener(new SelectionAdapter(){

            @Override

            public void widgetSelected(SelectionEvent e) {

                boolean isShowIdInVocabulary = showIdInVocabulary.getSelection();

                PreferencesUtil.getPreferenceStore().setValue(IPreferenceKeys.CHECKLIST_ID_IN_VOCABULARY, isShowIdInVocabulary);

             }

        });