Add item to existing workflow

[gizmo16]

I need help with update workflowTask, add file to existing workflow.

My code is:

      List<NodeRef> addNodes = new ArrayList<NodeRef>();
      addNodes.add(addNodeRef);
   
      Map<QName, List<NodeRef>> nodesAdd = new HashMap<QName, List<NodeRef>>();
      nodesAdd.put(WorkflowModel.ASSOC_PACKAGE, addNodes);


      workflowService.updateTask(currentTask.getId(), null, nodesAdd, null);  //nullpointer

‍‍‍‍‍‍‍‍‍‍‍‍

- currentTask is not null, is actual task in workflow, where I want add item
- addNodes is list actual NodeRef uploaded to alfresco folder
- addNodeRef is only one item uploaded to alfresco


Is there any other way an item is added to the already running workflow?

Where's my mistake?


Thanks in advance

[jpotts]

This question is cross-posted on stack, so if anyone wants to reply to this, let's do it over there:
http://stackoverflow.com/questions/24279718/alfresco-add-item-to-existing-workflow

Gizmo16, please pick one place for your question going forward.

Jeff