Why are you mixing formfields and CCs. You can do this with CCs and a restricted form:
Code:
Select Case ContentControl.Title
Case "Installments"
If ActiveDocument.ProtectionType <> wdNoProtection Then ActiveDocument.Unprotect
Set oTbl = Selection.Tables(1)
For lngCount = oTbl.Rows.Count To 4 Step -1
oTbl.Rows.Last.Delete
Next lngCount
For lngCount = 2 To CLng(ContentControl.Range.Text)
oTbl.Rows.Last.Range.Copy
oTbl.Rows.Last.Range.Paste
Next lngCount
For lngCount = 1 To CLng(ContentControl.Range.Text)
If IsNumeric(oTbl.Rows(1).Cells(2).Range.ContentControls(1).Range.Text) Then
oTbl.Rows(lngCount + 2).Cells(2).Range.ContentControls(1).Range.Text = _
oTbl.Rows(1).Cells(2).Range.ContentControls(1).Range.Text / CLng(ContentControl.Range.Text)
Else
oTbl.Rows(lngCount + 2).Cells(2).Range.ContentControls(1).Range.Text = "$0.00"
End If
Next lngCount
oTbl.Range.Fields.Update
oTbl.Rows(3).Cells(2).Range.ContentControls(1).Range.Select
ActiveDocument.Protect wdAllowOnlyReading, True
End Select
End Sub