combo and list box column is zero based, so second column is 1. Perhaps that is your issue.
Usually, first column is the autonumber id of a record - not the second column. I don't know if your 1 and 2 values are record id's or not, but your setup looks a bit unusual.
EDIT - what you show will work in code but not in a query. It's a bit more difficult to use the column value in a query. Then again, you shouldn't have to if this was the other way around.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.