If this property is set to True, the main Horizontal Axis is displayed at grid's bottom. Otherwise, it is not displayed. Default value is True. Example:

Sub CommandButton1_Click()
  Set E3Chart1 = Screen.Item("E3Chart1")
  oldBottomScale = E3Chart1.ShowBottomScale
  MsgBox "Display axis"
  E3Chart1.ShowBottomScale = True
  MsgBox "Hide axis"
  E3Chart1.ShowBottomScale = False
  MsgBox "Return..."
  E3Chart1.ShowBottomScale = oldBottomScale
End Sub