Your third dropdown seems unnecessary, since there are no options to choose from. Accordingly, all you need there is a text content control.
Now, suppose you have two dropdowns, one titled 'Master' and the other titled 'Servant', plus a text content control titled 'Slave'. If you add your 'Outlet 1' & 'Outlet 2' dropdown options to the 'Master', the following macro, added to your document's 'ThisDocument' code module, will take care of the updating:
Code:
Private Sub Document_ContentControlOnExit(ByVal ContentControl As ContentControl, Cancel As Boolean)
Dim i As Long, StrOut As String
With ContentControl
If .Title = "Master" Then
Select Case .Range.Text
Case "Outlet 1"
StrOut = "010,020,030"
Case "Outlet 2"
StrOut = "S010,S020,S030"
Case Else
StrOut = ""
End Select
With ActiveDocument.SelectContentControlsByTitle("Servant")(1)
.Type = wdContentControlText
.Range.Text = ""
.Type = wdContentControlDropdownList
For i = 0 To UBound(Split(StrOut, ","))
.DropdownListEntries.Add Split(StrOut, ",")(i)
Next
End With
ActiveDocument.SelectContentControlsByTitle("Slave")(1).Range.Text = " "
End If
If .Title = "Servant" Then
Select Case .Range.Text
Case "010"
StrOut = "A1234"
Case "020"
StrOut = "11112"
Case "030"
StrOut = "Z7890"
Case "S010"
StrOut = "A7654"
Case "S020"
StrOut = "S41114"
Case "S030"
StrOut = "S44444"
Case Else
StrOut = " "
End Select
ActiveDocument.SelectContentControlsByTitle("Slave")(1).Range.Text = StrOut
End If
End With
End Sub
Naturally, you'll want to edit the code to change the outputs generated by the 'Servant'.
FWIW, the above is just an extension of the example given in this post:
https://www.msofficeforums.com/word-...html#post77762