vb.net Admin Shutdown e.cancel = True

I'm trying to create an app whereby only password holders such as the admin can close/ exit the app (reasons being that we dont want employees accidentaly exiting the app).

What I thought to do was to create a simple IF statement but it just dosen't seem to work. Has anyone got an idea on how i could accomplish this?

Note: VARIABLE_SHUTDOWN is a global variable

    Private Sub ShutdownServerToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles ShutdownServerToolStripMenuItem.Click
    VARIABLE_SHUTDOWN = 1
    Me.Close()
End Sub

Private Sub AdminForm_FormClosing(sender As System.Object, e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
    If VARIABLE_SHUTDOWN= 0 Then
        e.Cancel = True
    ElseIf VARIABLE_SHUTDOWN = 1 Then
        Me.Close()
    End If
End Sub

I also tried this ussing the my.settings feature but with no success?