How can i override the default option,  displaycReplyoption from false to True

init: function (parent, options) {
        this._super.apply(this, arguments);
        // options when the thread is enabled (e.g. can send message,
        // interact on messages, etc.)
        this._enabledOptions = _.defaults(options || {}, {
            displayOrder: ORDER.ASC,
            displayMarkAsRead: true,
            displayModerationCommands: false,
            displayStars: true,
            displayDocumentLinks: true,
            displayAvatars: true,
            squashCloseMessages: true,
            displayEmailIcons: true,
            displayReplyIcons: false,
            loadMoreOnScroll: false,
        });
        // options when the thread is disabled
        this._disabledOptions = {
            displayOrder: this._enabledOptions.displayOrder,
            displayMarkAsRead: false,
            displayModerationCommands: false,
            displayStars: false,
            displayDocumentLinks: false,
            displayAvatars: this._enabledOptions.displayAvatars,
            squashCloseMessages: false,
            displayEmailIcons: false,
            displayReplyIcons: false,
            loadMoreOnScroll: this._enabledOptions.loadMoreOnScroll,
        };
        this._selectedMessageID = null;
        this._currentThreadID = null;
        this._messageMailPopover = null;
    },