Android Question How to add a library?

Hello all,

I would like to integrate the WebViewExtras library in my project, so I read the doc about it on : https://www.b4x.com/guides/B4XBasicLanguage/?page=81 and create this directory structure on my computer :

C:\Android\librairies_aditionnelles\B4A\WebViewExtras_v1_42\ with this files : WebViewExtras.jar and WebViewExtras.xml in it.

I put that in my path tool for additionnal libaries : C:\Android\librairies_aditionnelles

I restarted my B4X IDE, but the library does not appear in the library manager, why? What should I do?

My computer use Windows 10.

Best regards,
Laurent