Android Question load 2 layout by using root

i have create 2 layout when i load first 1 i do button to load second layout but still not working
code:
''first
Private Sub B4XPage_Created (Root1 As B4XView)
Root = Root1
Root.LoadLayout("test")
End Sub

''Second
Private Sub UpdateAdsSt
Root = Root1
Root.LoadLayout("Layout1")

end sub