问如何在多人或多组字段中添加用户时修复SharePoint中的错误(仅限人员)

EN

$scope.formData = { Title: $scope.codeNumber, SBMTestId:{ "results": [17,15] } }
                var data = JSON.stringify($scope.formData);
                var listName = "Test";
                data = data.replace(/[{}]/g, '');
                var datavalue = "{__metadata:{'type':'SP.Data.TestListItem'}," + data + "}";
                $http({
                    url: _spPageContextInfo.webAbsoluteUrl + "/_api/web/lists/GetByTitle('" + listName + "')/items",
                    method: "POST",
                    headers: {
                        "Accept": "application/json;odata=verbose",
                        "Content-Type": "application/json;odata=verbose",
                        "X-RequestDigest": $("#__REQUESTDIGEST").val(),
                        "X-HTTP-Method": "POST"
                    },
                    data: datavalue
                }).then(function (response) {
           alert("Go on!");

        }, function (response) {
                    alert("Something is wrong. Please try after sometimes");
                }); 

data:
  error:
    code:"-1, Microsoft.SharePoint.Client.InvalidClientQueryException"
    message:
    lang:"en-US"
    value:"An unexpected 'PrimitiveValue' node was found when reading from the JSON reader. A 'StartObject' node was expected."