Matthew ,
This seems to work like a charm now.
I was missing the second condition on Contentdocumentlink model “ContentDocumentLink records where ContentDocument.LatestPublishedVersion.IsLatest”.
I was also missing “is in the set of values” instead of “equals” by mistake on the “Content Document” model condition.
Other than that I was pretty closed 
Thank you again for the fast support.
Cyril
