Reply To: Error Operand "OR" (Java)

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ruleBlock.addRule(Rule.parse("if C2H2_C2H4 is A and CH4_H2 is B and (C2H4_C2H6 is A or C2H4_C2H6 is B) then DIAGNOSTICO is D1", engine));

It was a ctrl + c and ctrl + v problem… the rule is shown.. this is the onde that is getting this error.
Sorry.. for bad copy and paste..

🙁