[rules-users] RIGHT_PAREN

Hi all, can some one help me????? I don't understand why this drl package org.drools.examples.decisiontable; #generated from Decision Table import com.RuleEngine.ControlloreNodo.*; import com.RuleEngine.ControlloreNodo.OggettiControllo.Azione; import com.RuleEngine.ControlloreNodo.OggettiStato.StatoNodo; global StatoNodo statoNodo; global Azione azione; function controllo(String a) { return statoNodovariabiliInOR(a); } #From row number: 13 rule "Pricing bracket_13" when controllo("18") then azione.setNomeAzione("ciao"); end Gives me this type of error: [13,12]: unknown:13:12 mismatched token: [@102,476:479='"18"',<20>,13:12]; expecting type RIGHT_PAREN Thanks, Raffo