Ext.create('Ext.form.Panel', {
                    standardSubmit: true,

                }).getForm().submit({
                        url: url,
                        fileUpload:true,
                        params: params,
                        success: function (response, opts) {
                            if (successCallBack) {
                                successCallBack.call(scope, response, opts);
                            }
                        },
                        failure: function (form, action) {
                            if (failureCallback) {
                                failureCallback.call(scope, form, action);
                            }
                        }

                    });