Formula Bar Will Not Unhide

The code below turns off/on all of the command bars when my workbook opens. The problem is that the Formula Bar does not turn back on when the workbook is closed.
Got the code in this Remove/Show All Toolbars.

Option Explicit
Private mFormulaBar
Private Sub Workbook_BeforeClose(Cancel As Boolean)
Dim oCB As CommandBar
For Each oCB In Application.CommandBars
oCB.Enabled = True
Next oCB

Application.DisplayFormulaBar = mFormulaBar
End Sub.............