We are implementing a script on the Task Details page to change a property named "StatusTicket" but we are not being able to save the changes on the case property after the update.
Here is the code we are using right now:
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debugger;
var coord = payload.coordination;
var workitemEdit = payload.workItemEditable;
var solution = this.solution;
var prefix = solution.getPrefix();
var theController;
var dentroSLAController;
var slaAberturaController;
var dataSlaAbertura = new Date();
var sla = 2;
var statusTicketController;
var statusTickettxt = "Em atendimento";

require(["icm/base/Constants", "icm/model/properties/controller/ControllerManager"],function(Constants, ControllerManager){
    var loadTopicHandler = function(context, complete, abort) {
        debugger;
        var DentroSLA = prefix + '_DentroSLAAberturaTicketAtendente';
        var SLAAbertura = prefix + '_SLAAberturaTicketAtendente';
        var StatusTicket = prefix + '_StatusTicket';
        theController = ControllerManager.bind(workitemEdit);
        dentroSLAController = theController.getPropertyController(DentroSLA);
        slaAberturaController = theController.getPropertyController(SLAAbertura);
        statusTicketController = theController.getPropertyController(StatusTicket);

        //trata data e calcula diferença entre data de abertura e sla
        var dataAberturaCase = workitemEdit.getLaunchDate();
        var extDateReg = new RegExp("[0-9]{4}-[0-9]{2}-[0-9]{2}");
        var dateFormat = extDateReg.exec(dataAberturaCase);
        var dataAberturaCaseDt =  new Date(dateFormat[0] + " 00:00:00");
        var diffDays = parseInt((dataSlaAbertura.getDate() - dataAberturaCaseDt.getDate()) / (1000 * 60 * 60 * 24), 10);

    //console.log(diffDays + " days");
        //seta novo valor no campo
        statusTicketController.set('value',statusTickettxt);
        if (slaAberturaController.get('value') == null){
            slaAberturaController.set('value',dataSlaAbertura);
            
            if (diffDays > sla){
                dentroSLAController.set('value',true);
            }

        }

        //deixa como hidden
        //dentroSLAController.set("hidden", true);
        //slaAberturaController.set("hidden", true);
        
        complete();
    };
    
    var updateTicket = function(context, complete, abort) {
        debugger;
        ControllerManager.unbind(workitemEdit)
        complete();
    };
    debugger;
    coord.participate(Constants.CoordTopic.BEFORELOADWIDGET,loadTopicHandler);
    coord.participate(Constants.CoordTopic.BEFORECOMPLETE,loadTopicHandler);
    coord.participate(Constants.CoordTopic.BEFORESAVE,loadTopicHandler);
    coord.participate(Constants.CoordTopic.CANCEL,loadTopicHandler);
    coord.participate(Constants.CoordTopic.COMPLETE,loadTopicHandler);
    coord.participate(Constants.CoordTopic.SAVE,loadTopicHandler);
    coord.participate(Constants.CoordTopic.COMPLETE,updateTicket);
    coord.participate(Constants.CoordTopic.CANCEL,updateTicket);
    coord.participate(Constants.CoordTopic.SAVE,updateTicket);
});

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How can we save the new value of the property on the case using this script I sent before?