Hi,
Not sure if you've found any solution yet...
Basically, the aim could be achieved using two ways:
The transformation could use some custom function - please see
DevGuide - Adding custom functions to transformationsThis function would get the current group's pages path (e.g. from GroupContext) and select TOP 1 document with newest date from under that path using API (
selecting nodes). The document's last modification timestamp is in DocumentModifiedWhen field, so you could use it in order by expression. This would be the latest update.
Another way would be to catch update events (either in all places or better using event handler - custom TreeNode handler - see
handling overview) and update parent group page document or the particular Group object so that it holds the latest timestamp itself for easy usage (displaying).
Hope this still helps
Regards,
Zdenek