Salesforce setNextApproverIds（）不工作

我已经创建了一个审批流程，并且正在从自定义按钮后面的Apex代码启动它。这很好，但我面临的问题是无法从Apex代码设置审批人。它始终采用审批流程中设置的审批人

这是我的密码：

    Approval.ProcessSubmitRequest req = new Approval.ProcessSubmitRequest();
    req.setComments('Submitted for approval. Please approve. Source:ApexClass');
    req.setObjectId(dcr.Id);
    req.setNextApproverIds(new Id[] {'0057E000001dn5T'}); // This is the id of a user
    Approval.ProcessResult result = Approval.process(req);

这会提交记录以供审批，但会将其发送给审批流程中设置的审批人，而不会发送给代码中设置了id为“0057E000001dn5T”的用户

我还尝试更改上面代码中的以下行

    req.setNextApproverIds(new Id[] {'0057E000001dn5T'});

到

及

……但什么都没用

那么，如何从Apex代码设置审批人？任何帮助都将不胜感激

    List<Id> approverIdList = new List<Id>();
    Id approverId = [SELECT DCR_Send_to_Approver_AGN__c FROM User 
            WHERE Id = :UserInfo.getUserId()].DCR_Send_to_Approver_AGN__c;
    approverIdList.add(approverId);
    req.setNextApproverIds(approverIdList);

    list<string> approverIdList = new list<string>();
    group g = [SELECT (select userOrGroupId from groupMembers) FROM group 
            WHERE name= 'testUserGroup'];
    for (GroupMember gm : g.groupMembers) {
        approverIdList.add(gm.userOrGroupId);
        }
    req.setNextApproverIds(approverIdList);