for (Map.Entry<String, List<String>> entry : multiValueMap.entrySet()) {
parameterMap.put(entry.getKey(),
entry.getValue().toArray(new String[0]));
}
String businessKey = new ConfAssigneeOperation().execute(parameterMap);
String nextStep = "startProcessInstance";
model.addAttribute("businessKey", businessKey);
model.addAttribute("nextStep", nextStep);
model.addAttribute("bpmProcessId", bpmProcessId);