alfresco-community-repo/config/alfresco/workflow/adhoc_processdefinition.xml

<?xml version="1.0" encoding="UTF-8"?>

<process-definition xmlns="urn:jbpm.org:jpdl-3.1" name="wf:adhoc">

   <swimlane name="initiator"/>

   <start-state name="start">
      <task name="wf:submitAdhocTask" swimlane="initiator"/>
      <transition name="" to="adhoc"/>
   </start-state>

   <swimlane name="assignee">
      <assignment actor-id="#{bpm_assignee.properties['cm:userName']}"/>
   </swimlane>
   
   <task-node name="adhoc">
      <task name="wf:adhocTask" swimlane="assignee">
	      <event type="task-create">
	         <script>
	            if (bpm_workflowDueDate != void) taskInstance.dueDate = bpm_workflowDueDate;
	            if (bpm_workflowPriority != void) taskInstance.priority = bpm_workflowPriority;
	         </script>
	      </event>
      </task>
      <transition name="" to="completed">
         <action class="org.alfresco.repo.workflow.jbpm.AlfrescoJavaScript">
           <script>
              if (wf_notifyMe)
              {
                 var mail = actions.create("mail");
                 mail.parameters.to = initiator.properties["cm:email"];
                 mail.parameters.subject = "Adhoc Task " + bpm_workflowDescription;
                 mail.parameters.from = bpm_assignee.properties["cm:email"];
                 mail.parameters.text = "It's done";
                 mail.execute(bpm_package);
              }
           </script>
         </action>
      </transition>
   </task-node>
   
   <task-node name="completed">
      <task name="wf:completedAdhocTask" swimlane="initiator"/>
      <transition name="" to="end"/>
   </task-node>
      
   <end-state name="end"/>
   
</process-definition>