<h:panelGrid columns="2">
                            <h:outputLabel value="Номер приложения" for="appendix" />
                            <h:selectOneMenu id="appendix" value="#{indexMBean.appendix}">
                                <f:selectItem itemLabel="Параграф №1" itemValue="1" />
                                <f:selectItem itemLabel="Параграф №2" itemValue="2" />
                                <f:ajax event="change" listener="#{indexMBean.setHazardsByAppendix}" />
                            </h:selectOneMenu>
                        </h:panelGrid>

    public void setHazardsByAppendix() {
        Logger logger = Logger.getAnonymousLogger();
        logger.warning(this.appendix);
        this.hazards = this.hazardSessionBean.getHazardByAppendix(this.appendix);
    }