I'm trying to use this code on OnChange event of IB_LookupCombo:

dm.qrSalesItems.FieldByName('Price').AsCurrency :=
dmLookup.qrProductSales.FieldByName('Sale_Price').asCurrency;

This IB_LookupCombo points to dmLookup.qrProductSales.

The problem is: when I'm insert data in dm.qrSalesItems, and click
IB_LookupCombo, the record are shown, but, I can't choose any!

If I put the code on OnExit event of the same IB_LookupCombo, I can
choose normally a product.

Can't I use that code on OnChange event?

Thanks,
Andrei

Using Delphi 4 + FB 1.5.2 + IBO 4.3