How to use the cookie.user.id function in cookie

compileUrl: function(config, url, fillSessionId) {
                // Acquire cookie values.
                var cstlUrl   = $cookieStore.get(CstlConfig['cookie.cstl.url']),
                    domainId  = $cookieStore.get(CstlConfig['cookie.domain.id']),
                    userId    = $cookieStore.get(CstlConfig['cookie.user.id']);

                // Inject cstl-service webapp url.
                if (angular.isDefined(cstlUrl)) {
                    url = url.replace(CstlConfig['inject.expr.ctrl.url'], cstlUrl);
                    if(config){
                      config.headers.access_token = $.cookie(CstlConfig['cookie.auth.token']);
                    }
                }else if (/@cstl/.test(url)){
                  window.location.href="index.html";
                }

                // Inject domain id value.
                if (angular.isDefined(domainId)) {
                    url = url.replace(CstlConfig['inject.expr.domain.id'], domainId);
                }

compileUrl: function(url, fillSessionId) {
                // Acquire cookie values.
                var cstlUrl   = $cookies[CstlConfig['cookie.cstl.url']],
                    domainId  = $cookies[CstlConfig['cookie.domain.id']],
                    userId    = $cookies[CstlConfig['cookie.user.id']],
                    sessionId = $cookies[CstlConfig['cookie.session.id']];

                // Inject cstl-service webapp url.
                if (angular.isDefined(cstlUrl)) {
                    url = url.replace(CstlConfig['inject.expr.ctrl.url'], cstlUrl);
                }

                // Inject domain id value.
                if (angular.isDefined(domainId)) {
                    url = url.replace(CstlConfig['inject.expr.domain.id'], domainId);
                }

                // Inject user id value.
                if (angular.isDefined(userId)) {
                    url = url.replace(CstlConfig['inject.expr.user.id'], userId);
                }

clear: function(){
              $.removeCookie(CstlConfig['cookie.auth.token'], { path: '/' });
              $.removeCookie(CstlConfig['cookie.user.id'], { path: '/' });
              $.removeCookie(CstlConfig['cookie.domain.id'], { path: '/' });
            }
        };