B4J Question no text in tableView

#Region  Project Attributes
    #MainFormWidth: 600
    #MainFormHeight: 400
#End Region

Sub Process_Globals
    Private fx As jFX
    Private MainForm As Form
    Private tv As TableView
    Private more As Button
    Private less As Button
End Sub

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    'MainForm.RootPane.LoadLayout("Layout1") 'Load the layout file.
    MainForm.RootPane.LoadLayout("1")
    MainForm.Show
   
End Sub
Sub less_Action
    tv.Items.Clear
    For i = 0 To 5
        Dim tmpEntry(5) As String   
        tmpEntry(0) = i
        tmpEntry(1) = i*i
        tv.Items.Add(tmpEntry)
    Next
End Sub
Sub more_Action
    tv.Items.Clear
    For i = 0 To 50
        Dim tmpEntry(2) As String   
        tmpEntry(0) = i
        tmpEntry(1) = i/2
        tv.Items.Add(tmpEntry)
    Next
End Sub
Sub tv_MouseClicked (EventData As MouseEvent)
    If Not(tv.SelectedRow = -1) Then
        Dim tmpArray() As String
        tmpArray = tv.Items.Get(tv.SelectedRow)
        Log(tmpArray(0)&" - "&tmpArray(1))
    End If
End Sub