You have to insert the new value in the combo box list, like this:

cboCombo.Valid():
IF NOT Alltrim(THIS.DisplayValue) == Alltrim(THIS.Value)
lcValue = THIS.DisplayValue
THIS.AddListItem(THIS.DisplayValue, THIS.NewItemId + 1)
THIS.Requery()
THIS.Value = lcValue
ENDIF

HTH

>I'm using a combo box with style=0 i.e. where I can type n select from list.. Rowsource type is alias
>
>When I type a new value (which is not existing in alias(rowsource),) the field is becoming blank...
>
>same way if i manually open my table and add the value and try to go in that field, again it is becoming blank...