[xwiki-users] backlink calculation in database list properties

Hi guys, I'm doing the following in XWiki. I have 2 classes, let's say A and B with properties A1..n and B1..n respectively. Now, I have in my template for documents of class A a database list field with the ability to select properties B1 from all documents of class B. When I now change a property B1 in a selected document, then my field in A stays the same. This probably isn't a bug, but something like a backlink calculation and change properties accordingly feature not implemented yet. Do you have a workaround for what I want? Thanx for any answers. Cheers Sebastian