B4J Question go to the primitive records When the record is clicked tabel view

private Sub checkbox_CheckedChange(Checked As Boolean)
    Dim chk As CheckBox = Sender
    
    Dim index As Int = chk.Tag
    Dim arr() As Object = tw.Items.Get(index)
    
    tw.Items.RemoveAt(index)
    If Checked Then
        tw.Items.InsertAt(0,arr)
    Else
        tw.Items.InsertAt(tw.Items.Size -1,arr)
    End If
End Sub