Custom class does not capture event

[Mario Osorio]

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class clsMorForm
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Option Compare Database
Option Explicit

Dim WithEvents frm As Form
Public Controls As Collection

Property Set Form(TheForm As Form)
Dim ctl As Control
Dim morCtl As clsMorControl

Set frm = TheForm
Set Me.Controls = New Collection

For Each ctl In frm.Controls
If ctl.ControlType = acTextBox _
Or ctl.ControlType = acListBox _
Or ctl.ControlType = acComboBox _
Or ctl.ControlType = acAttachment Then
Set morCtl = New clsMorControl
Set morCtl.Control = ctl
Controls.Add morCtl
End If
Next ctl
frm.BeforeUpdate = EventProcedure
End Property

Private Sub frm_BeforeUpdate(Cancel As Integer)
MsgBox "frm_BeforeUpdate"
End Sub

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class Form_frmPatients
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Option Compare Database
Option Explicit

Private Sub Form_Load()
Dim morForm As clsMorForm

Set morForm = New clsMorForm
Set morForm.Form = Me.Form
End Sub

Private Sub Patient_AfterUpdate()
Me.Patient = StrConv(Me.Patient, vbProperCase)
End Sub

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Module modOtherConstants
============================================================
Option Compare Database
Option Explicit

Public Const EventProcedure = "[Event Procedure]"

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I haven't used Access/VBA in quite a while and this is driving me nuts: The event I am trying to sink is not working, it just does not happen. What am I doing wrong here?!?

Any and all comments area welcome.
TIA!