function getIOCfg() {
            var cfg = {
                method: 'POST',
                data: "feed_id="+feedId,
                form: {
                    id: "#myform",
                    useDisabled: true,
                    upload: false,
                },
                on: {
                    failure: function(e) {
                        alert("Boom from IO!");
                    }
                }
            };
            return cfg;
        }

        // rebuilds columns data
        var columns = Array();
        var dataSourceFields = Array();
        Y.all(myconfig.s.activeFields).each(function (node) {
            customFieldName = node.one(myconfig.s.customFieldName).get("value")
            columns.push({ key : customFieldName });
            dataSourceFields.push(customFieldName);
        });

        // DataSource
        var selectProductsDS = new Y.DataSource.IO({
            source: myconfig.preiewURL
        });
        selectProductsDS.plug(Y.Plugin.DataSourceJSONSchema, {
            schema: {
                resultFields: dataSourceFields,
            }
        });
        selectProductsDS.after("response", function () {
            selectProductsTable.render(target);
            selectProductsDS.detachAll("response");
        });

        // DataTable
        var selectProductsTable = new Y.DataTable.Base({
            columnset: columns,
        });
        selectProductsTable.plug(Y.Plugin.DataTableDataSource, {
            datasource: selectProductsDS
        });

        Y.one(target).setContent("");
        selectProductsTable.datasource.load({
            cfg : getIOCfg(EditFeedConfig.previewFormat),
            /*
            callback : {
                failure: function (o) {
                    alert("Boom from DS!")
                }
            }
            */
        });