Image upload

[uptecher]

I have 10 images in a folder, want to upload it in a website, in order by filename, on the same different session.

So it's like this:
click website upload button: upload first photo
First session
click website upload button: upload second photo
Second Session
click website upload button: upload third photo
Third Session

Continue till session

etc

How to do it?

I created a source with the images folder and set up to use each file only once, but when I want to upload to the website it uploads everytime the first images only.