diff --git a/src/Resources/views/custom_bootstrap_4_horizontal_layout.html.twig b/src/Resources/views/custom_bootstrap_4_horizontal_layout.html.twig
index 82d7e92..fc51b30 100644
--- a/src/Resources/views/custom_bootstrap_4_horizontal_layout.html.twig
+++ b/src/Resources/views/custom_bootstrap_4_horizontal_layout.html.twig
@@ -233,7 +233,7 @@
         <div class="input-group-append col-sm-3 col-xl-5 p-0">
             <div class="btn-group row mx-0 w-100" role="group" id="{{ id }}-btn-group">
                 <button class="btn btn-secondary col-6 open-file-manager-btn"
-                        data-iframe-src="{{ path('file_manager', {'module': 1, 'conf': conf}) }}"
+                        data-iframe-src="{{ path('file_manager', {'module': 1, 'conf': conf, 'extra': extra}) }}"
                         data-modal-title="{{ placeholder }}" data-input-id="{{ id }}" type="button"
                         id="{{ id }}-add-button"><span class="d-none d-xl-inline">{{ add_button_text }}</span> <i
                             class="jcon jcon-add"></i></button>
diff --git a/src/Type/Extension/TEUploadTypeExtension.php b/src/Type/Extension/TEUploadTypeExtension.php
index cb89b3e..d3b576f 100644
--- a/src/Type/Extension/TEUploadTypeExtension.php
+++ b/src/Type/Extension/TEUploadTypeExtension.php
@@ -24,12 +24,14 @@ public function configureOptions(OptionsResolver $resolver)
             'file_type' => 'file',
             'conf' => null,
             'allow_copy' => true,
+            'extra' => []
         ]);
     }
 
 
     public function buildView(FormView $view, FormInterface $form, array $options)
     {
+        $view->vars['extra'] = $options['extra'];
         $view->vars['delete_button_text'] = $options['delete_button_text'];
         $view->vars['add_button_text'] = $options['add_button_text'];
         $view->vars['placeholder'] = $options['placeholder'];