Abdelilah Essiari [http://community.jboss.org/people/AESSIARI] created the discussion "Questions on JBPM 4.4." To view the discussion, visit: http://community.jboss.org/message/566219#566219 -------------------------------------------------------------- I am evaluating JBPM 4.4 (JPDL)  for my project and I have ran into a couple of issues: One is that a mix of exclusive continuations are asynchronous continuations does not quite work. Upon a close look at AcquireJobsCmd.java, it becomes aparrent:           a) more than one exclusive job can execute in different transactions.           b) an exclusive job concurrently with an asynchrouns job is running. This defeats my understanding of what exclusive means. I have tentatively modified AcquireJobsCmd.java by ensuring that a and b do not happen. This important in my case as I have an assign statement that needs to update a process variable inside a forEach with asynchronous java continuations as shown below. This only works after I made my changes.      <variable history="false" name="GlobalMap" type="serializable">            <map>            </map>        </variable>       <foreach g="160,261,48,48" in="#{dataSources}" name="foreach" var="dataSource">            <transition  to="do lookup"/>        </foreach>           <java continue="async" class="test.JavaService" g="327,259,98,50" method="lookup" name="do lookup" var="returnVar">            <arg>                <object expr="#{dataSource}"/>         </arg>         <arg>             <string value="kw"/>         </arg>         <transition continue="exclusive" to="copy" />       java>          <assign from-expr="#{returnVar}" name="copy" to-expr="#{GlobalMap[dataSource]}">         <transition to="join"/>     </assign>        <join g="567,259,80,40" multiplicity="2" name="join">         <transition to="do materialize"/>     </join>       ... The other question is that +returnVar+ is actually mapped to the parent execution. It should map to the forked execution as is the variable +dataSource+. Shouldn't it? In any case the tentative fix for this was easy. Just changed a one line in JavaActivity.java. if (variableName!=null) {         //  execution.setVariable(variableName, returnValue);        execution.createVariable(variableName, returnValue); } Hope to hear from someone. Thanks in advance. aes. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/566219#566219] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]