Vlad, I thank you very much for your help and efforts!

If the fine manual says it can be done, we'll find the way to do it, I'm sure! If there is a bug in SPT, perhaps somebody else can tell us about it, and how to handle it.

I just wonder why it is so cumbersome to acomplish such a task with SPT. Using SPT for other ones is very straightforward. I don't believe views are the solution for every need, but...

Fernando