I have an issue that when I modify my object, my HTML doesn't rerender I'm using empApi and my apex class is working fine, the problem here is to rerender HTML:

    <div class = "container">
        <template if:true={listaVO}>
            <template for:each={listaVO} for:item="v">
                    key = {v.maiorValor}
                    listao = {v}


    import { LightningElement, wire, api, track } from 'lwc';
    import getVO from '@salesforce/apex/LeilaoLwcLogic.getVO';
    import { subscribe, unsubscribe, onError, setDebugFlag, isEmpEnabled } from 'lightning/empApi';
    import Id from '@salesforce/user/Id';
    import { refreshApex } from '@salesforce/apex';
    var capeta;
    var userId = Id;
    export default class LeilaoLwc extends LightningElement {
        @track listaVO;
        @track error;
        @api channelName = '/event/Lance_Veiculo__e';
        subscription = {};

        connectedCallback() {       
                .then(result => {
                    this.listaVO = result;
                    capeta = result;
                .catch(error => {
                    this.error = error;
handleSubscribe() {

        var messageCallback = function(response) {
            var obj = JSON.parse(JSON.stringify(response));
            var novoVencedor = obj.data.payload.novoVencedor__c;

            //Here I use global variable "capeta" because of if I try to use this.listaVO, it shows undefined
            var lst2 = JSON.parse(JSON.stringify(capeta));
            lst2.forEach(el =>{
                if (el.veiculoVO.Id == obj.data.payload.Veiculo__c){

                //Check if winning user is actual user
                        if (novoVencedor !=userId){  
                            el.maiorValor = obj.data.payload.Valor_Lance__c;
                            el.numLance = obj.data.payload.Numero_Lances__c;
                this.listaVO = lst2; //HERE I PASS THE VALUE TO listaVO BUT IT DOESNT SHOW IN HTML

Child Component HTML:

<p<lightning-formatted-number value ={listao.maiorValor} ></lightning-formatted-number></p>
<p>Número de lances: <lightning-formatted-number value ={listao.numLance}></lightning-formatted-number</p>

Child Component JS:

@track _listao;
    @api carrolist;
    get listao(){
        return this._listao;
    set listao(value){
        this._listao = value;

i've solved the problem after I saw this topic: LWC property is not reactive The problem was with JavaScript, "this" wasn't referencing to my variable

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