var performSearch = function() {                                                                                                                     
            var searchString = Y.get(ret.cfg.searchstring).get('value');
            var data = 'SearchStr=' + searchString;
            data += '&SearchLimit=10';   
            data += '&SearchOffset=0';   
                                                                                                                                                             
            var backendUri = ret.cfg.backendUri ? ret.cfg.backendUri : 'ezflow::search' ;
                                                                                                                                                             
            if(searchString !== '') {
                Y.io.ez(backendUri, {on: {success: successCallBack}, method: 'POST', data: data });
            }
        }