unable to update Labels for issue using updateIssue ofSOAP API 4.2.1

[Jaysingh2022]

Here is sample code that I am using to create and update issue

RemoteIssue newIssue = jss.createIssue(authToken, issue);

RemoteFieldValue [] remoteFieldValues=new RemoteFieldValue[] {new RemoteFieldValue("customfield_10223",new String[] {"My Custom Labels"}),
        new RemoteFieldValue("labels",new String[] {"My Custom Label"})};
RemoteIssue updateRemoteIssue=jss.updateIssue(authToken, newIssue.getKey(),remoteFieldValues);

No exception but  not updating labels

Soap API version 4.2.1