Using protected URL-links with graphic elements

I’m using base with graphic elements that are linked through URL. Works perfect.
Now I need to use URL- links that point to a website with password protection (.htaccess type)
Trying a link of the type “https://user:password@graficsite.org/grafic.png” that works perfect in the browser doesn’t work.
How can this be achieved?

I guess it should work.
if not : How to Report Bugs in LibreOffice - The Document Foundation Wiki

Dear fpy, thank you.
I understand that the scheme user:password@ is detected by the browser software and the credentials are put on the correct place for the HTTPS GET request. The inside of the graphics element is not a browser, so it might well be that the correct scheme for the user credentials is different. If it is implemented at all I would like to know how to use it. I didn’t find any hint in the docs, so I tried to ask the community. If no answer I’ll report a bug/feature request.

maybe check tricks like : Using Remote Files

This was close, but the services listed are not applicable for https:// linked photos / graphics in a database, sorry. I couldn’t find a working way to store the credentials for the photo- website there.