PowerApps and OneNote Business

Hello,
I wan't to display a page content from OneNote in a HtmlText zone. I created a test app with dropdown to select the page here are the Items field:

DropDown1       'OneNote(Business)'.GetNotebooks()

DropDown1 _1  'OneNote(Business)'.GetSectionsInNotebook(Dropdown1.Selected.Key).value

DropDown1 _2  'OneNote(Business)'.GetPagesInSection(Dropdown1.Selected.Key;Dropdown1_1.Selected.id).value

The DropDown1_2 has an error "the section id is invalid".

 

Where's the bug?

 

Thank you

Patrick