diff --git a/mod/feedback/classes/external.php b/mod/feedback/classes/external.php
index ec6979fff3c..faa58c0eca5 100644
--- a/mod/feedback/classes/external.php
+++ b/mod/feedback/classes/external.php
@@ -424,7 +424,6 @@ class mod_feedback_external extends external_api {
         $warnings = array();
 
         list($feedback, $course, $cm, $context) = self::validate_feedback($params['feedbackid']);
-        self::validate_feedback_access($feedback,  $course, $cm, $context);
 
         $feedbackstructure = new mod_feedback_structure($feedback, $cm, $course->id);
         $returneditems = array();
@@ -613,7 +612,7 @@ class mod_feedback_external extends external_api {
                             'name' => new external_value(PARAM_NOTAGS, 'The response name (usually type[index]_id).'),
                             'value' => new external_value(PARAM_RAW, 'The response value.'),
                         )
-                    ), 'The data to be processed.'
+                    ), 'The data to be processed.', VALUE_DEFAULT, array()
                 ),
                 'goprevious' => new external_value(PARAM_BOOL, 'Whether we want to jump to previous page.', VALUE_DEFAULT, false),
             )
@@ -630,7 +629,7 @@ class mod_feedback_external extends external_api {
      * @return array of warnings and launch information
      * @since Moodle 3.3
      */
-    public static function process_page($feedbackid, $page, $responses, $goprevious = false) {
+    public static function process_page($feedbackid, $page, $responses = [], $goprevious = false) {
         global $USER, $SESSION;
 
         $params = array('feedbackid' => $feedbackid, 'page' => $page, 'responses' => $responses, 'goprevious' => $goprevious);
@@ -645,18 +644,24 @@ class mod_feedback_external extends external_api {
         // Create the $_POST object required by the feedback question engine.
         $_POST = array();
         foreach ($responses as $response) {
-            $_POST[$response['name']] = $response['value'];
+            // First check if we are handling array parameters.
+            if (preg_match('/(.+)\[(.+)\]$/', $response['name'], $matches)) {
+                $_POST[$matches[1]][$matches[2]] = $response['value'];
+            } else {
+                $_POST[$response['name']] = $response['value'];
+            }
         }
         // Force fields.
         $_POST['id'] = $cm->id;
         $_POST['courseid'] = $course->id;
         $_POST['gopage'] = $params['page'];
         $_POST['_qf__mod_feedback_complete_form'] = 1;
+
+        // Determine where to go, backwards or forward.
         if (!$params['goprevious']) {
+            $_POST['gonextpage'] = 1;   // Even if we are saving values we need this set.
             if ($feedbackcompletion->get_next_page($params['page'], false) === null) {
                 $_POST['savevalues'] = 1;   // If there is no next page, it means we are finishing the feedback.
-            } else {
-                $_POST['gonextpage'] = 1;   // If we are not going to previous page or finishing we are going forward.
             }
         }
 
diff --git a/mod/feedback/tests/external_test.php b/mod/feedback/tests/external_test.php
index 0d91edb2a2e..5ca229aa03e 100644
--- a/mod/feedback/tests/external_test.php
+++ b/mod/feedback/tests/external_test.php
@@ -29,6 +29,7 @@ defined('MOODLE_INTERNAL') || die();
 global $CFG;
 
 require_once($CFG->dirroot . '/webservice/tests/helpers.php');
+require_once($CFG->dirroot . '/mod/feedback/lib.php');
 
 use mod_feedback\external\feedback_summary_exporter;
 
@@ -315,7 +316,7 @@ class mod_feedback_external_testcase extends externallib_advanced_testcase {
         global $DB;
 
         // Force non anonymous.
-        $DB->set_field('feedback', 'anonymous', 0, array('id' => $this->feedback->id));
+        $DB->set_field('feedback', 'anonymous', FEEDBACK_ANONYMOUS_NO, array('id' => $this->feedback->id));
         // Add a completed_tmp record.
         $record = [
             'feedback' => $this->feedback->id,
@@ -323,7 +324,7 @@ class mod_feedback_external_testcase extends externallib_advanced_testcase {
             'guestid' => '',
             'timemodified' => time() - DAYSECS,
             'random_response' => 0,
-            'anonymous_response' => 2,
+            'anonymous_response' => FEEDBACK_ANONYMOUS_NO,
             'courseid' => $this->course->id,
         ];
         $record['id'] = $DB->insert_record('feedback_completedtmp', (object) $record);
@@ -386,7 +387,7 @@ class mod_feedback_external_testcase extends externallib_advanced_testcase {
 
         // Now, try a feedback that we attempted.
         // Force non anonymous.
-        $DB->set_field('feedback', 'anonymous', 0, array('id' => $this->feedback->id));
+        $DB->set_field('feedback', 'anonymous', FEEDBACK_ANONYMOUS_NO, array('id' => $this->feedback->id));
         // Add a completed_tmp record.
         $record = [
             'feedback' => $this->feedback->id,
@@ -394,7 +395,7 @@ class mod_feedback_external_testcase extends externallib_advanced_testcase {
             'guestid' => '',
             'timemodified' => time() - DAYSECS,
             'random_response' => 0,
-            'anonymous_response' => 2,
+            'anonymous_response' => FEEDBACK_ANONYMOUS_NO,
             'courseid' => $this->course->id,
         ];
         $record['id'] = $DB->insert_record('feedback_completedtmp', (object) $record);