Android Question xCustomListView - method AsView returns to B4XView not initialized

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.

    Private m_clvInterventi As CustomListView
End Sub

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    Activity.LoadLayout("LayoutCLV")

End Sub

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.

    Private m_clvInterventi As CustomListView
    Private xui As XUI
    Private m_HeightToolbar As Int
End Sub

Sub Activity_Create(FirstTime As Boolean)
    m_HeightToolbar = 50dip
    'Do not forget to load the layout file created with the visual designer. For example:
    Dim pnl As B4XView = xui.CreatePanel("Panel")
    pnl.SetLayoutAnimated(0,0dip, m_HeightToolbar, 100%x, 100%y - m_HeightToolbar)
    pnl.LoadLayout("LayoutCLV")
    Activity.AddView(pnl, 0dip, m_HeightToolbar, 100%x, 100%y - m_HeightToolbar )

End Sub