JESS: Any Ideas

[David]

Hi guys,   Anyone knows what is an async error  as follows?   Async Error: Jess reported an error in routine Funcall.execute             while executing (SetPoint (setpoint ?value))             while executing deffunction too-cold             while executing (too-cold ?t)             while executing rule LHS (TEQ)             while executing rule LHS (TECT).   This is regarding the HVAC simulation. What I did was I changed the ?*set-point* parameter to a bean. That is, I want to dynamically change the set point of the simulation from the java infrastructure (I thought it would be more realistic that way). I made SetPoint as a defclass and subsequently definstance instead.   The error seems to come from   (deffunction too-cold (?t)             (SetPoint (setpoint ?value))              (return (< ?t (- ?value 2))))   I think my understanding of some jess issues must be faulty. Would appreciate any advice and pointers.     Regards David