var AAA = function ( eventConfig, e, eventData ) {

                var restUrl = mdlUrls.TIMELINE_DATA
                  , vm = eventConfig.viewModel
                  , reqId = vm.requestId();

                if ( reqId ) {
                    $.ajax({
                        url: restUrl.format( reqId ),
                        type: 'GET',
                        contentType: 'application/json; charset=utf-8',
                        dataType: 'json',
                    })
                    .done( function ( resp ) {

            console.log ( vm.timezone() );
            ...
            ...
           });
        }
...
...
}