Hi!

I resolved to strart a new thread because the previous was too confuse.

I´m working with JBPM and when I access a specific page I have to do litle system processing with values comes from a form. So I´m trying to do that with ajax request.

Here is a one case that exemplifies the problem.

the page.xml

<end-conversation/>
 <param name="taskId"/>
 <action execute="#{secondaryQuestionAction.startFillSecondaryQuestion}"/>

the specific page, that contains a button that get the value from text area and add it in a data table

        <rich:panel>
            <f:facet name="header">#{messages['srprocess.fillsecondaryquestion.page.title']}</f:facet>
                        <h:outputText value="#{messages['srprocess.fillsecondaryquestion.page.description']}"/><br/>
                        <rich:spacer height="20px"/>
                        
                        <s:decorate id="questaoSecundaria" template="/layout/edit.xhtml">
                                <ui:define name="label">#{messages['srprocess.fillsecondaryquestion.page.question']}</ui:define>
                                <h:inputTextarea cols="100" rows="5" value="#{secondaryQuestion.question}"/>
                        </s:decorate>
            
            <a4j:commandButton value="#{messages['command.add']}" 
                actionListener="#{secondaryQuestionAction.addSecondaryQuestion}" reRender="tabelaQuestoes">
            </a4j:commandButton>

            <a4j:outputPanel id="tabelaQuestoes" rendered="#{secondaryQuestionAction.exibeTabelaQuestoes}">
                    <h:outputText value="#{messages['srprocess.fillsecondaryquestion.questionstable.description']}"/>
                    <rich:dataTable id="tableSecondaryQuestion" value="#{secondaryQuestionAction.secondaryQuestionList}" var="q">
                        <rich:column>
                                #{q.question}
                        </rich:column>
                    </rich:dataTable>
            </a4j:outputPanel>
            
            <div style="clear: both" />
        </rich:panel>

And finnaly, the bean

@Name("secondaryQuestionAction")
@Scope(ScopeType.PAGE)
public class SecondaryQuestionAction implements Serializable {

        
        private static final long serialVersionUID = 8394705048656015853L;
        
        @In
        private StatusMessages statusMessages;
        
        @In(required=false)
        @Out(scope=ScopeType.BUSINESS_PROCESS, required=false)
        protected SRProtocol srProtocol;
        
        @In
        private SecondaryQuestion secondaryQuestion;
        
        private List<SecondaryQuestion> secondaryQuestionList;
        
        private boolean exibeTabelaQuestoes;
        
        public boolean isExibeTabelaQuestoes() {
                return exibeTabelaQuestoes;
        }

        public void setExibeTabelaQuestoes(boolean exibeTabelaQuestoes) {
                this.exibeTabelaQuestoes = exibeTabelaQuestoes;
        }

        public List<SecondaryQuestion> getSecondaryQuestionList() {
                return secondaryQuestionList;
        }

        public void setSecondaryQuestionList(
                        List<SecondaryQuestion> secondaryQuestionList) {
                this.secondaryQuestionList = secondaryQuestionList;
        }

        @BeginTask
        public void startFillSecondaryQuestion() {
                if (secondaryQuestionList == null) {
                        secondaryQuestionList = new ArrayList<SecondaryQuestion>();
                }
                statusMessages.addFromResourceBundle("task.initiated.message");
        }
        
        @EndTask
        public String endFillSecondaryQuestion() {
                if (srProtocol != null) {
                        srProtocol.setSecundaryQuestionList(secondaryQuestionList);
                }
                statusMessages.addFromResourceBundle("srprocess.fillsecondaryquestion.page.success");
                return "/listarTarefas.xhtml";
        }
        
        public void addSecondaryQuestion(ActionEvent event) {
                if (secondaryQuestion != null) {
                        secondaryQuestionList.add(secondaryQuestion);
                        secondaryQuestion = null;
                }
        }
}

When I press the button that call addSecondaryQuestion method, an exception is thrown with message

Caused by java.lang.IllegalStateException with message: "task/process id may not be null"

org.jboss.seam.bpm.BusinessProcessInterceptor.getProcessOrTaskId(BusinessProcessInterceptor.java:161)
org.jboss.seam.bpm.BusinessProcessInterceptor.beforeInvocation(BusinessProcessInterceptor.java:69)
org.jboss.seam.bpm.BusinessProcessInterceptor.aroundInvoke(BusinessProcessInterceptor.java:45)
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:185)
org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:103)
br.ufrj.cos.ese.configuradorrs.session.researchQuestion.SecondaryQuestionAction_$$_javassist_seam_14.startFillSecondaryQuestion(SecondaryQuestionAction_$$_javassist_seam_14.java)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

I´m was wondering why the task Id was lost, even with PAGE scope. So, how can I solve this?

Thanks!