Hi Chris.

>> The combo contains a list of keyed in data. If I select anything other than "01" I see the message 'True' but the cursor will not move to the next input field. <<

This is what I would expect to happen in a combo. The valid fires when you select an item with the mouse, but this will not move focus to the next control in the tab order.

>> There is no code in the 'Lost Focus' event and I have tried Return 1 which sometimes works but not always. <<

This one works consistently for me. Is this a drop down list or a drop down combo?

Marcia