diff --git a/h5p-default-storage.class.php b/h5p-default-storage.class.php
index e019990..9055266 100644
--- a/h5p-default-storage.class.php
+++ b/h5p-default-storage.class.php
@@ -53,11 +53,11 @@ class H5PDefaultStorage implements \H5PFileStorage {
    *
    * @param string $source
    *  Path on file system to content directory.
-   * @param int $id
-   *  What makes this content unique.
+   * @param array $content
+   *  Content properties
    */
-  public function saveContent($source, $id) {
-    $dest = "{$this->path}/content/{$id}";
+  public function saveContent($source, $content) {
+    $dest = "{$this->path}/content/{$content['id']}";
 
     // Remove any old content
     \H5PCore::deleteFileTree($dest);
@@ -68,11 +68,11 @@ class H5PDefaultStorage implements \H5PFileStorage {
   /**
    * Remove content folder.
    *
-   * @param int $id
-   *  Content identifier
+   * @param array $content
+   *  Content properties
    */
-  public function deleteContent($id) {
-    \H5PCore::deleteFileTree("{$this->path}/content/{$id}");
+  public function deleteContent($content) {
+    \H5PCore::deleteFileTree("{$this->path}/content/{$content['id']}");
   }
 
   /**
diff --git a/h5p-file-storage.interface.php b/h5p-file-storage.interface.php
index a003256..abee27a 100644
--- a/h5p-file-storage.interface.php
+++ b/h5p-file-storage.interface.php
@@ -22,18 +22,18 @@ interface H5PFileStorage {
    *
    * @param string $source
    *  Path on file system to content directory.
-   * @param int $id
-   *  What makes this content unique.
+   * @param array $content
+   *  Content properties
    */
-  public function saveContent($source, $id);
+  public function saveContent($source, $content);
 
   /**
    * Remove content folder.
    *
-   * @param int $id
-   *  Content identifier
+   * @param array $content
+   *  Content properties
    */
-  public function deleteContent($id);
+  public function deleteContent($content);
 
   /**
    * Creates a stored copy of the content folder.
diff --git a/h5p.classes.php b/h5p.classes.php
index 64c2ab5..103ec09 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -1311,15 +1311,15 @@ class H5PStorage {
       if (isset($options['disable'])) {
         $content['disable'] = $options['disable'];
       }
-      $contentId = $this->h5pC->saveContent($content, $contentMainId);
-      $this->contentId = $contentId;
+      $content['id'] = $this->h5pC->saveContent($content, $contentMainId);
+      $this->contentId = $content['id'];
 
       try {
         // Save content folder contents
-        $this->h5pC->fs->saveContent($current_path, $contentId);
+        $this->h5pC->fs->saveContent($current_path, $content);
       }
       catch (Exception $e) {
-        $this->h5pF->setErrorMessage($this->h5pF->t($e->getMessage()));
+        $this->h5pF->setErrorMessage($e->getMessage());
       }
 
       // Remove temp content folder
@@ -1433,7 +1433,7 @@ class H5PStorage {
    * @param $content
    */
   public function deletePackage($content) {
-    $this->h5pC->fs->deleteContent($content['id']);
+    $this->h5pC->fs->deleteContent($content);
     $this->h5pC->fs->deleteExport(($content['slug'] ? $content['slug'] . '-' : '') . $content['id'] . '.h5p');
     $this->h5pF->deleteContentData($content['id']);
   }