ListBox.Value Property (Access)
Determines or specifies which value or option in the list box is selected. Read/write Variant.
Set the Value property to the value in the bound column for the item selected in the list.
The Value property returns or sets a control's default property, which is the property that is assumed when you don't explicitly specify a property name.
The Value property is not the same as the DefaultValue property, which specifies the value that a property is assigned when a new record is created.