In VBA for access 2000, it was really easy to prevent someone from entering a value that was not in the list. In the combobox's properties, you just change the "LIMIT TO LIST" property to ...
If IsNumeric(.list(y, 0)) And IsNumeric(.list(x, 0)) Then If (.list(y, 0) + 0) < (.list(x, 0) + 0) Then ...
The **SelStart** property specifies or determines the starting point of the selected text or the position of the insertion point if no text is selected. Read/write **Integer**. _expression_ A variable ...