Fullcalendar v5 Last hour notshowing after set slotMaxTime dinamiclly

I am trying to add dinamiclly slotMinTime and slotMaxTime, after I do that last hour not showing. I saw in HTML its there but not showing. I try calendar.destroy and render but nothing...you can see on image. Here is my code.. Plesase help!!! Last our missing

dayCellContent: function (info) {
                if (info.view.type == "dayGridMonth") {
                    return;
                }
                else {
                    var mojdatum = calendar.getDate();
                    mojdatum = moment(mojdatum).format('YYYY-MM-DD');
                    var mojpocetak = moment(mojdatum).format('YYYY-MM-DD HH:mm');
         var mojkraj = moment(mojpocetak).add("23", "h").format('YYYY-MM-DD HH:mm');

                    $.ajax({
                        url: TimePath,
                        data: {
                            terminal: terminal,
                            start: mojpocetak,
                            end:mojkraj,
                            tip: kupac
                        },
                        success: function (data) {                               
                            calendar.setOption('slotMaxTime', data.max);
                            calendar.setOption('slotMinTime', data.min);                        
                           
                            return;
                        }
                    });
                    return;
                }

            },