Updating links in xhtml-fields at runtime

Hi.

I am trying to update links in xhtml-content during the SavingContent event using the IContentSoftLinkRepository, but cant seem to get it to work. I have been unable to track down any documentation for it so I have just been playing around, trying and failing. One of my (failed) approaches included below. This one increases the number of softlinks tied to a page, but in the xhtml the link does not change.

Any and all pointers would be appreciated.

        private void SavingContent(object sender, ContentEventArgs contentEventArgs)
        {
            var repo = ServiceLocator.Current.GetInstance<IContentSoftLinkRepository>();
            var links = repo.Load(contentEventArgs.ContentLink);
            var modified = new List<SoftLink>();
            foreach(var link in links.Where(p => p.SoftLinkType == ReferenceType.PageLinkReference))
            {
                if (link.ReferencedContentLink.ID == 4121)
                {
                    link.ReferencedContentLink = new ContentReference(1441);
                    modified.Add(link);
                }
            }
            repo.Save(contentEventArgs.ContentLink,
                      contentEventArgs.Content.Language(),
                      modified,
                      false);
        }