I tested it and it saves photos in the specified directory in OneDrive.
When I was trying to use it in PowerApp it doesn`t trigger the event to open directory. What I did I created an image and OnSelect called for CustomerServiceUploadPhotos.Run() flow.
Anyone can comment on this? What did I do wrong?
P.S.: Also I noticed when manually testing the flow you can choose any file even pdf and the flow will upload it to the OneDrive but with the image extension jpeg. I experimented and changed the extension of uploaded file back to pdf and it worked.....