@EventHandler (ignoreCancelled=true, priority=EventPriority.MONITOR)
public void onShowCaseInteractEvent (ShowCaseInteractEvent scie) {
Player player = scie.getPlayer();
Shop shop = scie.getShop();
Todo todo = scie.getTodo();
double amount = todo != null ? todo.Amount : 0;
ShowCaseEvent event = null;
// nothing to do here