I would like to use BPC to create Product bundles. I have a product type that has 2 product reference fields, and have created products for it to reference. For Each bundle is the combination of 1 design product value and 1/40 pen product values If this module works (I have no entity reference fields upon which to test), how would I go about duplicating it to use product reference fields instead? The size of this problem seems like low-hanging fruit a newb like myself could tackle, with a little guidance.