put("item_cooldown", (e, v) ->
{
    if (e instanceof ItemEntity)
    {
        if(!(v instanceof ListValue))
            throw new InternalExpressionException("'item_cooldown' expected a list as a second argument");
        ListValue lv = ((ListValue) v);
        Value playersVal = lv.getItems().get(0);
        int duration = ((NumericValue)lv.getItems().get(1)).getInt();
        if(playersVal instanceof ListValue){
            for(Value playerVal:((ListValue) playersVal).getItems()){
                PlayerEntity player = EntityValue.getPlayerByValue(e.getServer(),playerVal);
                player.getItemCooldownManager().set(((ItemEntity)e).getStack().getItem(),duration);
            }
        } else {//if its just 1 player
            PlayerEntity player = EntityValue.getPlayerByValue(e.getServer(),playersVal);
            player.getItemCooldownManager().set(((ItemEntity)e).getStack().getItem(),duration);
        }
    }
});