Referencing combo box column

[winsa]

Hi

Using A2003, SQL 2005.

I have a strange problem referencing a combo box column.

The combo box is simple, just two columns (Debtor No and Debtor Name). I
have a text box with the reference:

= cbo_DEBTOR.Column(1)

which should give me the debtor name.

Here is the strange thing, if I have Column Headers ON, nothing appears in
the combo box after a debtor is chosen. If I turn the Column Headers OFF,
then all is well with the world.

Can someone please explain this?

Thanks in advance.