item count...

public function confirmBuy($sender){

$money = EconomyAPI::getInstance()->myMoney($sender);

if($money > $this->paymentPrice){
EconomyAPI::getInstance()->reduceMoney($sender->getName(), $this->paymentPrice, true);
$sender->getInventory()->addItem(Item::get($this->itemId, $this->itemMeta, $this->itemCount, 1));
$sender->sendMessage("You have bought " . $this->itemName);

So my question is how do i give someone in their inventory an item with count beucase everytime i click on a simple form button it only gives me 1 item i need answer quick please