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Reloading task possible?

Question asked by antje on Oct 11, 2010
Latest reply on Oct 13, 2010 by falko.menge
Is it possible to reactivate a task, which is found in the tasklist assigned to an user?
I tried the following code:

    public void reloadProcessByTask(final Task task) {
        m_processInstance = (ExecutionEntity) m_processEngine.getRuntimeService()

        ProcessDefinition procDef = m_processEngine.getRepositoryService()

        ((ExecutionEntity) m_processInstance).setProcessDefinition((ProcessDefinitionImpl) procDef);

Later the program fails, when I try to get the activities from the processDefinition (activities are empty).
What`s wrong with the code? Is there a better solution to get an old task run?