Need help to customize binding function [résolu]

Hi,
when i add content in article manager using tierce component i need to bind them in flexi-content(this part is ok).
Problem is all binding content are set as first type, i can't assign other type to content.

I know this functionnality is core part but really need to customize this part.Where is the file to customize?


Thanks


I found this component foobla.com/products/featured-joomla-exte...la-fulltext-rss.html which work with flexi content and no need to change core file.

thanks to share solution !