Could be a number of things. Foremost, in my mind, is that the boundto may be numeric and boundto is set .F.

>I've got 3 combo boxes on a form. I am building codes for automotive needs so they are YEAR MAKE & MODEL.
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>I have 3 views to populate the 3 combos, Make & Model are param'ed by providing the data selected from the previous combo.
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>Year populates Make. Year & Make populate Model.
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>Why would the display in the combo box not appear after a user picks a line? You push the down arrow, data is there, click on a line. The combo box goes blank? Re click the down arrow and the line you clicked is highlighted.
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>__Stephen