Why is this property empty when I added child controls and can seethem?

[shapper]

Hello,

I have a control with the following property:

Private _Sections As New List(Of FormSection)
Public Property Sections() As List(Of FormSection)
Get
If _Sections Is Nothing Then
_Sections = New List(Of FormSection)
End If
Return _Sections
End Get
Set(ByVal value As List(Of FormSection))
_Sections = value
End Set
End Property

FormSection is another custom control. My control inherits from
CompositeControl and I implement it as follows:

Protected Overrides Sub CreateChildControls()
For Each section As FormSection In Me.Sections
MyBase.Controls.Add(section)
Next
MyBase.CreateChildControls()
End Sub

Finally I need to run a method from a child control in each section
when a Bubble event is caught:

Protected Overrides Function OnBubbleEvent(ByVal source As Object,
ByVal e As EventArgs) As Boolean

If TypeOf e Is CommandEventArgs Then

For Each section In Me.Sections
For Each field In section.Fields
If Not field.Validate Then

' Stop bubbling for EventArgs
Return True

End If
Next field
Next section
OnCommand(e)

End If

' Let bubbling run for non CommandEventArgs
Return False

End Function

The problem is that Me.Sections has no section in it so the loop does
not run.

But the sections are there! I added them and when I run the page I see
all them.

What am I doing wrong?

Thanks,

Miguel