The answer to your basic question is no. However, you can add a plain text content control to your cells and use something like the following in the VB Project ThisDocument module:
Code:
Option Explicit
Dim oCCTarget As ContentControl
Private Sub Document_ContentControlOnEnter(ByVal ContentControl As ContentControl)
Set oCCTarget = ContentControl
End Sub
Private Sub Document_ContentControlOnExit(ByVal ContentControl As ContentControl, Cancel As Boolean)
Set oCCTarget = Nothing
End Sub
Sub Increment()
If Not oCCTarget Is Nothing Then
Select Case oCCTarget.Range.Text
Case Is = vbNullString
oCCTarget.Range.Text = 1
Case Else
If IsNumeric(oCCTarget.Range.Text) Then
oCCTarget.Range.Text = Val(oCCTarget.Range.Text) + 1
Else
oCCTarget.Range.Text = 1
End If
End Select
End If
lbl_Exit:
Exit Sub
End Sub