diff --git a/admin/registration/index.php b/admin/registration/index.php
index 763ce4a7318..7578642c220 100644
--- a/admin/registration/index.php
+++ b/admin/registration/index.php
@@ -80,7 +80,7 @@ if (empty($cancel) and $unregistration and $confirm and confirm_sesskey()) {
         //unpublish the courses by web service
         if (!empty($hubcourseids)) {
             $function = 'hub_unregister_courses';
-            $params = array($hubcourseids);
+            $params = array('courseids' => $hubcourseids);
             $serverurl = $huburl . "/local/hub/webservice/webservices.php";
             $xmlrpcclient = new webservice_xmlrpc_client($serverurl, $hub->token);
             try {
diff --git a/admin/registration/lib.php b/admin/registration/lib.php
index 401228d9151..b1340388490 100644
--- a/admin/registration/lib.php
+++ b/admin/registration/lib.php
@@ -64,7 +64,7 @@ class registration_manager {
                 foreach ($hubs as $hub) {
                     //update the registration
                     $siteinfo = $this->get_site_info($hub->huburl);
-                    $params = array($siteinfo);
+                    $params = array('siteinfo' => $siteinfo);
                     $serverurl = $hub->huburl . "/local/hub/webservice/webservices.php";
                     $xmlrpcclient = new webservice_xmlrpc_client($serverurl, $hub->token);
                     try {
diff --git a/admin/registration/register.php b/admin/registration/register.php
index 798e58874aa..210cdf8e906 100644
--- a/admin/registration/register.php
+++ b/admin/registration/register.php
@@ -111,7 +111,7 @@ if ($update and confirm_sesskey()) {
     //update the registration
     $function = 'hub_update_site_info';
     $siteinfo = $registrationmanager->get_site_info($huburl);
-    $params = array($siteinfo);
+    $params = array('siteinfo' => $siteinfo);
     $serverurl = $huburl . "/local/hub/webservice/webservices.php";
     require_once($CFG->dirroot . "/webservice/xmlrpc/lib.php");
     $xmlrpcclient = new webservice_xmlrpc_client($serverurl, $registeredhub->token);
diff --git a/course/publish/forms.php b/course/publish/forms.php
index f7a235782a9..35b8f3fb528 100644
--- a/course/publish/forms.php
+++ b/course/publish/forms.php
@@ -119,7 +119,8 @@ class course_publication_form extends moodleform {
             $options = new stdClass();
             $options->ids = array($publication->hubcourseid);
             $options->allsitecourses = 1;
-            $params = array('', $share, !$share, $options);
+            $params = array('search' => '', 'downloadable' => $share,
+                'enrollable' => !$share, 'options' => $options);
             $serverurl = $huburl . "/local/hub/webservice/webservices.php";
             require_once($CFG->dirroot . "/webservice/xmlrpc/lib.php");
             $xmlrpcclient = new webservice_xmlrpc_client($serverurl, $registeredhub->token);
diff --git a/course/publish/index.php b/course/publish/index.php
index ec2785155b0..596a6c9bd92 100644
--- a/course/publish/index.php
+++ b/course/publish/index.php
@@ -69,7 +69,8 @@ if (has_capability('moodle/course:publish', get_context_instance(CONTEXT_COURSE,
         } else {
             //get all site courses registered on this hub
             $function = 'hub_get_courses';
-            $params = array('', 1, 1, array( 'allsitecourses' => 1));
+            $params = array('search' => '', 'downloadable' => 1,
+                'enrollable' => 1, 'options' => array( 'allsitecourses' => 1));
             $serverurl = $hub->huburl."/local/hub/webservice/webservices.php";
             require_once($CFG->dirroot."/webservice/xmlrpc/lib.php");
             $xmlrpcclient = new webservice_xmlrpc_client($serverurl, $hub->token);
@@ -128,7 +129,7 @@ if (has_capability('moodle/course:publish', get_context_instance(CONTEXT_COURSE,
             //unpublish the publication by web service
             $registeredhub = $registrationmanager->get_registeredhub($huburl);
             $function = 'hub_unregister_courses';
-            $params = array(array( $publication->hubcourseid));
+            $params = array('courseids' => array( $publication->hubcourseid));
             $serverurl = $huburl."/local/hub/webservice/webservices.php";
             require_once($CFG->dirroot."/webservice/xmlrpc/lib.php");
             $xmlrpcclient = new webservice_xmlrpc_client($serverurl, $registeredhub->token);
diff --git a/course/publish/metadata.php b/course/publish/metadata.php
index 2478b0ee546..61f37c4dd79 100644
--- a/course/publish/metadata.php
+++ b/course/publish/metadata.php
@@ -172,7 +172,7 @@ if (has_capability('moodle/course:publish', get_context_instance(CONTEXT_COURSE,
 
         //publish the course information
         $function = 'hub_register_courses';
-        $params = array(array($courseinfo));
+        $params = array('courses' => array($courseinfo));
         $serverurl = $huburl . "/local/hub/webservice/webservices.php";
         require_once($CFG->dirroot . "/webservice/xmlrpc/lib.php");
         $xmlrpcclient = new webservice_xmlrpc_client($serverurl, $registeredhub->token);