private void updatePaid() {

    for (int i = 0; i < cost.getIntervals().get(selectedCost).paid.size(); i++) {
      Log.d("TEST", "onCardViewTouch: ");
      if (selected
          .getFacebookID()
          .equals(cost.getIntervals().get(selectedCost).paid.get(i).first)) {
        cost.getIntervals().get(selectedCost).setPaid(i, true);
      }
    }

    ArrayList<Cost> costs = house.getCost();
    costs.set(costLocation, cost);
    house.setCosts(costs);

    updateItemBG(house);
  }