[RavenclawDev 221] accessing history of concepts from ravenclaw

[Svetlana Stenchikova]

Hi, I have a question about accessing history of a concept.

Is this the right syntax to copy an old concept into a temporary value of
the same type:
EXECUTE(C("LOCAL_the_old_event") = C("the_event")[-1])

It appears to be empty after this command, although "the_event" has had a
value before.

Could you please suggest what may be a problem? Do I have to do anything
explicitly to keep the history of concepts?

thanks
Svetlana
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.srv.cs.cmu.edu/pipermail/ravenclaw-developers/attachments/20070206/98d221e0/attachment.html