The Value tab in the List Box Builder specifies where to get return values and where to store them. The other List Box Builder tabs are: List Items tab, Style tab, and Layout tab.
When you choose OK, the builder closes, applying the property settings from every tab.
Return the Value From
Specifies the column or field from which to get a value when the user selects a list box item. This option corresponds to the BoundColumn property.
Field Name
Specifies a table or view field in which to store the value specified in the Return the Value From box. By default, the list includes fields from a table or view selected on the List Items tab. Choose the dialog button to display the Open dialog box so you can select another file. This option corresponds to the ControlSource property.