Создание подписи CADES_BES с использованием асинхронной версии

<script language="javascript" src="cadesplugin_api.js"></script>

        function SignCreate(certSubjectName, dataToSign) {
            return new Promise(function(resolve, reject){
                cadesplugin.async_spawn(function *(args) {
                    try {
                        var oStore = yield cadesplugin.CreateObjectAsync("CAdESCOM.Store");
                        yield oStore.Open(cadesplugin.CAPICOM_CURRENT_USER_STORE, cadesplugin.CAPICOM_MY_STORE,
                            cadesplugin.CAPICOM_STORE_OPEN_MAXIMUM_ALLOWED);

                        var CertificatesObj = yield oStore.Certificates;
                        var oCertificates = yield CertificatesObj.Find(
                            cadesplugin.CAPICOM_CERTIFICATE_FIND_SUBJECT_NAME, certSubjectName);

                        var Count = yield oCertificates.Count;
                        if (Count == 0) {
                            throw("Certificate not found: " + args[0]);
                        }
                        var oCertificate = yield oCertificates.Item(1);
                        var oSigner = yield cadesplugin.CreateObjectAsync("CAdESCOM.CPSigner");
                        yield oSigner.propset_Certificate(oCertificate);
                        yield oSigner.propset_CheckCertificate(true);

                        var oSignedData = yield cadesplugin.CreateObjectAsync("CAdESCOM.CadesSignedData");
                        yield oSignedData.propset_Content(dataToSign);

                        var sSignedMessage = yield oSignedData.SignCades(oSigner, cadesplugin.CADESCOM_CADES_BES);

                        yield oStore.Close();

                        args[2](sSignedMessage);
                    }
                    catch (e)
                    {
                        args[3]("Failed to create signature. Error: " + cadesplugin.getLastError(err));
                    }
                }, certSubjectName, dataToSign, resolve, reject);
            });
        }

        function run() {
            var oCertName = document.getElementById("CertName");
            var sCertName = oCertName.value;
            if ("" == sCertName) {
                alert("Введите имя сертификата (CN).");
                return;
            }
            var thenable = SignCreate(sCertName, "Message");

            thenable.then(
                function (result){
                    document.getElementById("signature").innerHTML = result;
                },
                function (result){
                    document.getElementById("signature").innerHTML = result;
                });
        }