Thank you so much
Hallo, I've a deftemplate with a multislot data: (deftemplate IPDL-Data (multislot RLA)) and I added the deffacts: (deffacts initial-information (IPDL-Data (RLA (create$ 247-252 254-255 257-258 260-262 264-266 268 270-271)))) Furthermore I create a rule to find a data in a multislot field: (defrule find-rla ?rule <- (find-rla ?rla) (IPDL-Data (RLA $?s&:(member$ ?rla ?s))) => (retract ?rule) (printout t "Element RLA: " ?rla crlf)) then, after asserted the fact: (assert (find-rla 268)) it works fine...