OK, When you say "button", you mean that any button type object that I have in my layout will work or it should be a button within the toolbar
I have a button object in my layout, it is the button that I put in my code, also I tried with a panel object and Rootpanel of the page but not works
[CODE lang="b4x" title="DocumentPickerViewController"] Dim DocumentPicker As DocumentPickerViewController
DocumentPicker.InitializeImport("picker", Array("public.image"))
DocumentPicker.Show(pageExamen, Button1) [/CODE]