Excel 2007 :: How To Detect Macro Security Level

is it possible through vba code to determine the macro security level of Excel 2007 and inform the user. I tried the code below , it is executed when the workbook is opened, but it doesn't work.The code below is executed only when the macro security level is "Low". My goal is at least to inform , with a msgbox function, to change manually the security level.

Code:

Dim secAutomation As MsoAutomationSecurity
Dim zLevel
As String
secAutomation = Application.AutomationSecurity
Select Case secAutomation

[Code]....