I am adding a unique model number and weight for as a product option.

When the product is added to the cart, the option information appears correctly in the name of the item but the model number doesn't show the attribute model number.  The weight is correct but not the model number.  It uses the model number of the main product, not the model number of the option.  If I leave the main product model number empty, the cart shows no product number at all.

Can someone tell me how to make the product option model number appear in the cart when using option values?

I have several products where the customer can select different options of the product.  However, when the item is added to the cart, it shows the description to be correct but the model number is for the main product.  I would like to have the model number reflect the attribute information also.

Example: ProductModelNumber-2XL

Is this possible or is there an extension that will do this?