Hikaserial code not applied to product cust field

Okay so its a bit of a tricky one here. I have products with a custom field in the item.type
I also have Hikaserial applying a code to each product as its bought.

The problem is, if I adjust the custom field from option 1 to option 2, the serial code is not being applied to the second option of the product... How can I get this working?

TX

Ah, let me rephrase that...

Actually whats happening, is this field is being called in the product listings view. Then if I toggle the options and choose the second one and go through checkout, it is not being applied to the product (the serial number) // which means I dont see it in the order created email... However if I go through to the product page and apply the second option - it is applied to the product - and I see it in the order created email.

So for some reason the option although it displays in the product listing and it goes reflect in the text if I select it (reflect in the text of checkout) - the actual serial is not applied... Is there something I can add to the product listings view to ensure the serial is applied if a custom field option is selected?

!!!

What a truly wonderful component you guys have made! - For anyone who has the same issue, this is your salvation:

HikaShop serial product-add check

In da plugins!