Made recurringbox contain booleans. Binded this value to the expense recurring property

src/main/java/no/ntnu/idatt1002/demo/controller/AddExpenseController.java

@@ -48,7 +48,7 @@ public class AddExpenseController {
   private ComboBox<ExpenseCategory> categoryBox;
 
   @FXML
-  private ComboBox<String> recurringBox;
+  private ComboBox<Boolean> recurringBox;
 
   @FXML
   public void initialize() {
@@ -57,9 +57,9 @@ public class AddExpenseController {
     categoryBox.setItems(expenseCategories);
     categoryBox.setValue(ExpenseCategory.FOOD);
 
-    ObservableList<String> recurring = FXCollections.observableArrayList("Yes", "No");
+    ObservableList<Boolean> recurring = FXCollections.observableArrayList(true, false);
     recurringBox.setItems(recurring);
-    recurringBox.setValue("No");
+    recurringBox.setValue(false);
 
     System.out.print("This is in initialize");
     System.out.println(descriptionField);
@@ -77,6 +77,8 @@ public class AddExpenseController {
     dateField.textProperty().bindBidirectional(expense.dateProperty());
     amountField.textProperty().bindBidirectional(expense.amountProperty(), NumberFormat.getNumberInstance()); //TODO AMOUNT IS STORED WITH COMMA, WHICH IS NOT ALLOWED
     descriptionField.textProperty().bindBidirectional(expense.descriptionProperty());
+    //categoryBox.valueProperty().bindBidirectional(expense.getCategory());
+    recurringBox.valueProperty().bindBidirectional(expense.recurringProperty());
   }
   public void pressOkBtn(ActionEvent event) {
     String date = dateField.getText();