What field value I have to use in order to select a string in a list or combo box?
Every entry in the list or combo box has an associated “export value”. Export value is a text that is used to identify a particular selection. “Export” value of the selection may be the same or be completely different from its appearance. It is up to the form designer to assign export values. Use a specific “export” value to fill a list or combo box fields. You can change field’s export values by using Acrobat’s form tools.