php - How to make PayPal pull price of option? Opencart -

we're using built in paypal standard payment system on opencart not pulling option price paypal.

here code have in our pp_standard.tpl file

<?php $i = 1; ?> <?php foreach ($products $product) { ?> <input type="hidden" name="item_name_<?php echo $i; ?>" value="<?php echo $product['name']; ?>" /> <input type="hidden" name="item_number_<?php echo $i; ?>" value="<?php echo $product['model']; ?>" /> <input type="hidden" name="amount_<?php echo $i; ?>" value="<?php echo $product['price']; ?>" /> <input type="hidden" name="quantity_<?php echo $i; ?>" value="<?php echo $product['quantity']; ?>" /> <input type="hidden" name="weight_<?php echo $i; ?>" value="<?php echo $product['weight']; ?>" /> <?php $j = 0; ?> <?php foreach ($product['option'] $option)  { ?> <input type="hidden" name="on<?php echo $j; ?>_<?php echo $i; ?>" value="<?php echo $option['value']; ?>" /> <input type="hidden" name="os<?php echo $j; ?>_<?php echo $i; ?>" value="<?php echo $option['price']; ?>" /> <?php $j++; ?> <?php } ?> <?php $i++; ?> <?php } ?> 

i think line issue this

<input type="hidden" name="os<?php echo $j; ?>_<?php echo $i; ?>"      value="<?php echo $option['price']; ?>" /> 

but not sure change paypal pull correct price

here code shows price in cart.tpl file

<?php foreach ($product['option'] $option) { ?> - <small><?php echo $option['name']; ?>: <?php echo $option['value']; ?> - price: <?php echo $option['price']; ?></small><br />