Retention > Allow permanent deletion of selected documents

US4 PERMANENT DELETE ALL DOCS NOT MODIFIED SINCE X DAYS
As administrator, I call an url that allows to apply an action to a set of documents.To define the set of documents, in the url I give the number of days (X) since the document have not been modified
The action is : permanent delete.
I can check the documents that have not been modified since X days, are deleted permanently