G'day Charles

Not sure if this is any help to you, but here we go

I use Access, the first column in a combo is 0, then next is 1, and so on.

Type mismatch generally is if you try to insert text into a field that is
designated as value.

Essentially if your cell is formatted as a number and your second column is
text, that will give you the error.

Again, in access, in the AfterUpdate of a Combo you can pass the value of
what is in your second column to another field. eg

This is a piece of VBA code

Private Sub CSubCombo_AfterUpdate()
   Me.CustomerState = Me.CSubCombo.Column(1)
   Me.CustomerPC = Me.CSubCombo.Column(2)
   DoCmd.GoToControl "PhoneBus"
End Sub

I'm not sure of the equivalent in VB.

Try passing your second column value to another cell with a General format
and see if it solves your problem.

HTH
Mark.