diff --git a/mod/h5pactivity/classes/external/get_results.php b/mod/h5pactivity/classes/external/get_results.php
index a37ab62afef..633631f7039 100644
--- a/mod/h5pactivity/classes/external/get_results.php
+++ b/mod/h5pactivity/classes/external/get_results.php
@@ -150,7 +150,7 @@ class get_results extends external_api {
             'attempt' => $attemptdata->attempt,
             'rawscore' => $attemptdata->rawscore,
             'maxscore' => $attemptdata->maxscore,
-            'duration' => (empty($attemptdata->duration)) ? 0 : $attemptdata->duration,
+            'duration' => (empty($attemptdata->durationvalue)) ? 0 : $attemptdata->durationvalue,
             'scaled' => (empty($attemptdata->scaled)) ? 0 : $attemptdata->scaled,
             'results' => [],
         ];
@@ -257,7 +257,8 @@ class get_results extends external_api {
             'subcontent' => new external_value(PARAM_NOTAGS, 'Subcontent identifier'),
             'timecreated' => new external_value(PARAM_INT, 'Result creation'),
             'interactiontype' => new external_value(PARAM_NOTAGS, 'Interaction type'),
-            'description' => new external_value(PARAM_TEXT, 'Result description'),
+            'description' => new external_value(PARAM_RAW, 'Result description'),
+            'content' => new external_value(PARAM_RAW, 'Result extra content', VALUE_OPTIONAL),
             'rawscore' => new external_value(PARAM_INT, 'Result score value'),
             'maxscore' => new external_value(PARAM_INT, 'Result max score'),
             'duration' => new external_value(PARAM_INT, 'Result duration in seconds', VALUE_OPTIONAL, 0),
@@ -269,10 +270,10 @@ class get_results extends external_api {
             'track' => new external_value(PARAM_BOOL, 'If the result has valid track information', VALUE_OPTIONAL),
             'options' => new external_multiple_structure(
                 new external_single_structure([
-                    'description'    => new external_value(PARAM_TEXT, 'Option description'),
-                    'id' => new external_value(PARAM_INT, 'Option identifier'),
-                    'correctanswer' => self::get_answer_returns('The option correct answer'),
-                    'useranswer' => self::get_answer_returns('The option user answer'),
+                    'description'    => new external_value(PARAM_RAW, 'Option description', VALUE_OPTIONAL),
+                    'id' => new external_value(PARAM_TEXT, 'Option string identifier', VALUE_OPTIONAL),
+                    'correctanswer' => self::get_answer_returns('The option correct answer', VALUE_OPTIONAL),
+                    'useranswer' => self::get_answer_returns('The option user answer', VALUE_OPTIONAL),
                 ]),
                 'The statement options', VALUE_OPTIONAL
             ),
@@ -284,9 +285,10 @@ class get_results extends external_api {
      * Return the external structure of an answer or correctanswer
      *
      * @param string $description the return description
+     * @param int $required the return required value
      * @return external_single_structure
      */
-    private static function get_answer_returns(string $description): external_single_structure {
+    private static function get_answer_returns(string $description, int $required = VALUE_REQUIRED): external_single_structure {
 
         $result = new external_single_structure([
             'answer' => new external_value(PARAM_NOTAGS, 'Option text value', VALUE_OPTIONAL),
@@ -297,7 +299,7 @@ class get_results extends external_api {
             'unchecked' => new external_value(PARAM_BOOL, 'If has to be displayed as a unchecked option', VALUE_OPTIONAL),
             'pass' => new external_value(PARAM_BOOL, 'If has to be displayed as passed', VALUE_OPTIONAL),
             'fail' => new external_value(PARAM_BOOL, 'If has to be displayed as failed', VALUE_OPTIONAL),
-        ], $description);
+        ], $description, $required);
         return $result;
     }
 }
diff --git a/mod/h5pactivity/classes/output/attempt.php b/mod/h5pactivity/classes/output/attempt.php
index ac433b44886..6168e969924 100644
--- a/mod/h5pactivity/classes/output/attempt.php
+++ b/mod/h5pactivity/classes/output/attempt.php
@@ -96,7 +96,8 @@ class attempt implements renderable, templatable {
             ]),
         ];
         if ($attempt->get_duration() !== null) {
-            $duration = $this->extract_duration($attempt->get_duration());
+            $data->durationvalue = $attempt->get_duration();
+            $duration = $this->extract_duration($data->durationvalue);
             $data->duration = $this->format_duration($duration);
             $data->durationcompact = $this->format_duration_short($duration);
         }
diff --git a/mod/h5pactivity/classes/output/result/sequencing.php b/mod/h5pactivity/classes/output/result/sequencing.php
index 286d1ed10f2..f31aec11f9b 100644
--- a/mod/h5pactivity/classes/output/result/sequencing.php
+++ b/mod/h5pactivity/classes/output/result/sequencing.php
@@ -63,7 +63,7 @@ class sequencing extends result {
                 continue;
             }
             $option = (object)[
-                'id' => true,
+                'id' => 'true',
                 'description' => get_string('result_sequencing_position', 'mod_h5pactivity', $num),
                 'correctanswer' => $this->get_answer(parent::TEXT, $choices[$pattern]->description),
                 'correctanswerid' => 'item_'.$key,
diff --git a/mod/h5pactivity/classes/output/result/truefalse.php b/mod/h5pactivity/classes/output/result/truefalse.php
index a16cf1a5a35..aee3b8dc3ec 100644
--- a/mod/h5pactivity/classes/output/result/truefalse.php
+++ b/mod/h5pactivity/classes/output/result/truefalse.php
@@ -47,16 +47,18 @@ class truefalse extends result {
         // This interaction type have only one entry which is the correct option.
         $correctpattern = reset($this->correctpattern);
         $correctpattern = filter_var(reset($correctpattern), FILTER_VALIDATE_BOOLEAN);
+        $correctpattern = $correctpattern ? 'true' : 'false';
 
         $response = filter_var(reset($this->response), FILTER_VALIDATE_BOOLEAN);
+        $response = $response ? 'true' : 'false';
 
         $options = [
             (object)[
-                'id' => true,
+                'id' => 'true',
                 'description' => get_string('true', 'mod_h5pactivity'),
             ],
             (object)[
-                'id' => false,
+                'id' => 'false',
                 'description' => get_string('false', 'mod_h5pactivity'),
             ],
         ];
diff --git a/mod/h5pactivity/version.php b/mod/h5pactivity/version.php
index 6bfe3b6bf81..308fe0da0d9 100644
--- a/mod/h5pactivity/version.php
+++ b/mod/h5pactivity/version.php
@@ -25,5 +25,5 @@
 defined('MOODLE_INTERNAL') || die();
 
 $plugin->component = 'mod_h5pactivity';
-$plugin->version = 2020052100;
+$plugin->version = 2020052900;
 $plugin->requires = 2020013000;