if ((assignee.indexOf("&&") != -1)
|| (assignee.indexOf("||") != -1)) {
logger.info("assignee : {}", assignee);
List<String> candidateUsers = new Expr().evaluate(assignee,
this);
logger.info("candidateUsers : {}", candidateUsers);
delegateTask.addCandidateUsers(candidateUsers);
} else {
String value = expressionManager.createExpression(assignee)