JoomShopping + форма приема оплаты Яндекс, не могу настроить - JoomShopping

<input type="hidden" name="sum" value="458.22" data-type="number">

<input type="hidden" name="sum" value="<?php print formatprice($this->product->getPriceCalculate())?>" data-type="number">

<?php print $product->product_price?>

<form method="POST" class="paymyform" action="https://money.yandex.ru/quickpay/confirm.xml">
<select class="mypayment" name="paymentType" >  
<option class="pay1" value="PC">Яндекс деньги</option>
<option class="pay2" value="AC">Банковская карта</option>
<option class="pay5" value="MC">Мобильный платеж</option> 
</select>

<input type="hidden" name="paymentType" id="paymentType" value="" />

<button onlick="document.getElementById('paymentType').value='PC';">Яндекс деньги</button>

<script>
function checkParams() {
    var nik= $('#nik').val();
    var email = $('#email').val(); 
    if(nik.length != 0 && email.length != 0) {
        $('#submit').removeAttr('disabled');
    } else {
        $('#submit').attr('disabled', 'disabled');
    }
}
</script>

<form>
<input class="inuser" onkeyup='checkParams()' id="nik" type="text" placeholder="nik">
<input class="inuser" onkeyup='checkParams()' id="email" type="email" placeholder="email">
<button class="next" type="button" disabled>Следующий шаг</button>
</form>