I have one question.. wxPython listctrl in notebook

I created 2 tab use notebook.

I added button in first tab and added Listctrl in second tab.

If i click the button, Add value in Listctrl to second tab. how to solve this problem?

import wx

class PageOne(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
        self.query_find_btn = wx.Button(self, 4, "BTN", (40,40))
        self.Bind(wx.EVT_BUTTON, self.AddList, id = 4)

    def AddList(self, evt):
        self.list1.InsertStringItem(0,'Hello')

class PageTwo(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
        self.list1 = wx.ListCtrl(self,-1,wx.Point(0,0),wx.Size(400,400),style=wx.LC_REPORT |   wx.SUNKEN_BORDER)
    self.list1.InsertColumn(0,'values')

class MyFrame(wx.Frame):
    def __init__(self, parent, id, title):
        wx.Frame.__init__(self,parent,id,title,size=(400,400),pos=wx.Point(100,100), 
        style=wx.SYSTEM_MENU |wx.CAPTION )

        p = wx.Panel(self)
        nb = wx.Notebook(p)

        MainFrame = PageOne(nb)
        SecondFrame = PageTwo(nb)

        nb.AddPage(MainFrame, "One")
        nb.AddPage(SecondFrame, "Two")

        sizer = wx.BoxSizer()
        sizer.Add(nb, 1, wx.EXPAND)
        p.SetSizer(sizer)


class MyApp(wx.App):
    def OnInit(self):
        self.frame=MyFrame(None,-1,'Unknown.py')
        self.frame.Centre()
        self.frame.Show()
        return True

if __name__ == '__main__':
    app = MyApp(False)
    app.MainLoop()