Access cell content in month view mode

[vasiliyaltunin]

With plain JS version i can change every cell content in month view like that:

    let calendar = new FullCalendar.Calendar(document.getElementById('calendar'),  {
        initialDate: y+"-"+m.padStart(2, '0')+"-01",
        locale: 'ru',
        firstDay: 1,
        navLinks: true, // can click day/week names to navigate views
        selectable: true,
        editable: true,
        // eventLimit: true, // allow "more" link when too many events

        select: function(info ) {
            let title = prompt("Event Content:");
            if (title) {
                calendar.addEvent({
                    title: title,
                    start: info.startStr,
                    end: info.endStr
                })
            }
            calendar.unselect();
        },
        dayCellContent: function(arg) {  

                var innerBlock = document.createElement("span");
                
                innerBlock.classList.add("f-table","f-row","f-w-100", "f-pad-025");

...

                if (mm.mat.day == arg.dayNumberText) {
                    calendar.addEvent({
                        title: mm.mat.name,
                        start: arg.date.getFullYear()+'-'+strmonth.padStart(2, '0')+'-'+strday.padStart(2, '0'),
                        editable: false,
                        color: "#5c8467",
                        textColor: "#eee"
                    });
                }

...
                innerBlock.innerHTML = `
                        <div class="f-grow">
                            <div class="f-table f-row">
                                <div class="f-table f-col">
                                    <div>${dp_hs}</div>
                                    <div>${dp_eb}</div>
                                </div>
                                <div class="f-table f-col">
                                    <div>${mp_hs}</div>
                                    <div>${mp_eb}</div>
                                </div>
                                <div class="f-table f-col">
                                    <div>${yp_hs}</div>
                                    <div>${yp_eb}</div>
                                </div>
                            </div>
                            <div class="f-table f-row">
                                <div class="f-table f-col">
                                    <div>${ado}</div>
                                    <div>${aco}</div>
                                </div>
                            </div>
                        </div>
                        <div>${arg.dayNumberText}</div>
                `;               
                }

                return {domNodes: [innerBlock]};
            },
            customButtons: {
                prev: { // this overrides the prev button
                    click: () => {
                        if ((m-1) == 0) {
                            m = 13
                        }
                        document.location = "/month/"+(m-1)+"/"+y
                        //console.log("/month/"+(m-1)+"/"+y);
                    
                }
           },
                next: { // this overrides the next button
                    click: () => {
                        if ((m+1) > 12) {
                            m = 0
                        }
                        document.location = "/month/"+(m+1)+"/"+y
                }
            },
        },
    

    });

But i cant find any way to do this with filament plugin!

How to access cell content in month calendar view from filament plugin to change it?