How would I describe this? o.O

Hi! I am little bit stuck! I am wanting to check a players currency, if they have enough take the specified amount. Although, I have encountered a strange issue. There is NO stacktrace.

Code:

@EventHandler
    public void onInvClick(InventoryClickEvent e){
       
        Player player = (Player) e.getWhoClicked();
       
        switch(e.getCurrentItem().getType()){
       
        case STONE:
            player.sendMessage("d");
            if(core.hasEnough(player, 128)){
                player.sendMessage("d");
                    core.takeCurrency(player, 128);
                player.getWorld().playSound(player.getLocation(), Sound.ARROW_HIT, 1, 1);
                e.setCancelled(false);
            } else if (!core.hasEnough(player, 128)){
                player.sendMessage("d");
                player.getWorld().playSound(player.getLocation(), Sound.IRONGOLEM_HIT, 1, 1);
                e.setCancelled(true);
            }
            player.sendMessage("d");
            break;
        default: e.setCancelled(true);
            break;
       
        }
       
    }

Above is my code. I have made it so I do NOT have enough, to make me not able to take the item. Although, it does not work. takeCurrency & hasEnough method:

Code:

public boolean hasEnough(Player player, int amount){
       return amount<curr.getInt(player.getName());
    }
   
    public void takeCurrency(Player player, int amount){
        if(hasEnough(player, amount)){
            curr.set(player.getName(), (getAmount(player)-amount));
            try {
                curr.save(currency);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

 

Is curr.getInt returning -1 probably?
Try printing the variables and the results of such methods as a debug feature.

 

@CraftCreeper6 did you register your events?

 

@Datdenkikniet @mine-care
I registered events
Also, I'll have a check.
EDIT: The event just DOESN'T fire.
EDIT: WAIT!!!! NOOOOOOOO I forgot to register events... Damn. I mis-read ):

 

Gotcha