How Do You List Attributes for Lots?

Okay, just as a test, I entered two ISBNs, UPCs, and years for a lot of two golf videos. I separated them with a | character and no spaces in between, as that's the way the two years were already showing. When I clicked update, it didn't show an exclamation mark, so we'll see what happens the next time the feed is sent to Google.

ETA: This is for eCrater listings, mind you...just so you're not thinking this is a possible fix for other venues.