diff --git a/src/ui/sand_box.c b/src/ui/sand_box.c
index 3ea2ee1..439bab9 100644
--- a/src/ui/sand_box.c
+++ b/src/ui/sand_box.c
@@ -35,7 +35,7 @@ void on_activate_window_creation (GtkApplication *app, gpointer data)
     GtkWidget *that_window = gtk_application_window_new (gtk_application_new ("org.gtk.test", 0));
     g_signal_connect (G_OBJECT (that_window), "destroy", G_CALLBACK(on_destroy),
                       "sand_box.c / on_activate_window_creation()  >  exit(0) closes window\n");
-    gtk_window_set_title (GTK_WINDOW(that_window), "Ignition !");
+    gtk_window_set_title (GTK_WINDOW(that_window), "In the lab ");
     gtk_window_set_default_size (GTK_WINDOW(that_window), 180, 140);
     GtkWidget *my_scrolling_thing = gtk_scrolled_window_new ();
     gtk_window_set_child (GTK_WINDOW (that_window), my_scrolling_thing);
@@ -47,9 +47,8 @@ void on_activate_window_creation (GtkApplication *app, gpointer data)
 
 static void on_setup_cb (GtkSignalListItemFactory *self, GtkListItem *my_list_item, gpointer user_data)
 {
-    GtkWidget *my_label = gtk_label_new ("here am I");
-    GtkWidget *my_expander = gtk_list_item_get_child (my_list_item);
-    gtk_list_item_set_child (my_list_item, my_label);
+    GtkWidget *my_expander = gtk_expander_new (GTK_LABEL(my_list_item));    // ? = gtk_expander_new (self);
+    gtk_list_item_set_child (my_list_item, my_expander);
 }
 
 static void on_bind_cb (GtkSignalListItemFactory *self, GtkListItem *my_list_item, gpointer user_data)