ContentControl.DropdownListEntries (Word)
Returns a ContentControlListEntries collection that represents the items in a drop-down list content control or in a combo box content control.
Dim objCC As ContentControl
Dim objMap As XMLMapping
Set objCC = ActiveDocument.ContentControls.Add(wdContentControlDropdownList)
objCC.Title = "My Favorite Animal"
objCC.SetPlaceholderText , , "Select your favorite animal "
'List entries
objCC.DropdownListEntries.Add "Cat"
objCC.DropdownListEntries.Add "Dog"
objCC.DropdownListEntries.Add "Horse"
objCC.DropdownListEntries.Add "Monkey"
objCC.DropdownListEntries.Add "Snake"
objCC.DropdownListEntries.Add("Other")