I think D. Lopez-De-Ipina wrote:
> Hi,
>
> I have the following rule:
>
> (defrule update-TRIPevent "removes old event and keeps the new one"
> ?oldFactID <- (TRIPevent (TRIPcode ?user1) (timestamp ?t1) (cameraID
> ?camera1) (*STRUCT_params ?paramsFact) (*STRUCT_pose ?poseFact)
> (*STRUCT_angles ?anglesFact))
> (TRIPevent (TRIPcode ?user1) (timestamp ?t2) (cameraID ?camera2))
> (test (< ?t1 ?t2))
> (or (people-toguether ?user1 ?)
> (people-toguether ? ?user1))
> =>
> (retract ?anglesFact)
> (retract ?poseFact)
> (retract ?paramsFact)
> (retract ?oldFactID)
> (printout t ?oldFactID "has been deleted and there was a people
> toguether event"))
>
> Jess parser complains saying:
>
> Message: Bad slot value .
> ( or ( at line 219.
>
What version of Jess are you using? Experimental support for the "or"
CE appeared only in an early alpha of Jess 6; Jess 4 and 5 didn't
support it at all.
---------------------------------------------------------
Ernest Friedman-Hill
Distributed Systems Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
Org. 8920, MS 9012 [EMAIL PROTECTED]
PO Box 969 http://herzberg.ca.sandia.gov
Livermore, CA 94550
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