*/
public void setProcessInstanceVariable(String name, Object value) {
IPersistenceService persistenceService = this.rtCtx.getPersistenceService();
if (processInstanceVariables==null){
//通过数据库查询进行初始化
List<ProcessInstanceVar> allVars = persistenceService.findProcessInstanceVariable(this.getId());
processInstanceVariables = new HashMap<String ,Object>();
if (allVars!=null && allVars.size()!=0){
for (ProcessInstanceVar theVar :allVars){
processInstanceVariables.put(theVar.getVarPrimaryKey().getName(), theVar.getValue());
}