Добавляет не все товары

<div class="box-size">
        	<form method="post" class="ms2_form">
                <div class="number">
        		    <label for="">XS/42</label>
        		    <div class="data-input">
        		        <input type="hidden" name="id" value="48">
                        <input type="hidden" name="options[size]" value="XS/42">
        		        <input type="number" name="count" size="5" value="0">
        			    <span class="plus">+</span>
        			    <span class="minus">-</span>
        		    </div>
        		    <button type="submit" name="ms2_action" value="cart/add" style="display: none;"></button>
        		</div>
            </form>
        <form method="post" class="ms2_form">
                <div class="number">
        		    <label for="">M/46</label>
        		    <div class="data-input">
        		        <input type="hidden" name="id" value="48">
                        <input type="hidden" name="options[size]" value="M/46">
        		        <input type="number" name="count" size="5" value="0">
        			    <span class="plus">+</span>
        			    <span class="minus">-</span>
        		    </div>
        		    <button type="submit" name="ms2_action" value="cart/add" style="display: none;"></button>
        		</div>
            </form>
    </div>

$('.product-item .cart-btn').click(function(){
            $(this).closest('.product-item').find('form.ms2_form').each(function(){
                if ($(this).find('input[name="count"]').val() > 0) { 
                    $(this).submit();
                 }
            });
        });