Hi, Maria
No, you can’t do it now.
Because it is temporaly disabled.
We working on improving this part of functionality.
We have this feature from early stages of MTH (2007),
because our aim is to have real object oriented database.
However, we want it to staty easy-to-use, this is why improving it.
The way dabbledb handles it and the way we had it not good enought and we will open upgraded functionality this month with a lot of other improvements.
Thank you for asking and pointing to it.
This topic will be useful for another users.
Thanks!