Which item should I use ?

Hello


We have 3D views made by QGIS. They consist of an html file linked to a specific folder that contains js files.
I have uploaded the folders and html files via ftp, and I wanted to use an item to allow the author of the article to select one of the html files to display the 3D view of his choice.

Currently I have not found this option or how to make it work. The closest I can get is the image gallery, but while I can select the correct folder, I can't select the html file simply. 
Then I have to enable a correct display. 

I could also go through an iframe integration by integrating the code by hand, but hey....
Do you have something better / something else?

Thanks
 

maybe you can create a select field
value = title of html
label = title
use prefix for url
use suffix for and of url
ex :
<iframe scr="
" ...>
think to disable renove space in render

Nop, it doesn't fit my needs.
but I choose for the moment the iframe option. I have to set it manually, but it makes the job for the moment.
Thanks

ok