Fixing little bug in scene controller jupyter notebook example

examples/jupyter/va_scene_controller.ipynb

@@ -42,16 +42,28 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "ename": "Exception",
+     "evalue": "Not implemented (error code 8)",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[1;31mException\u001b[0m                                 Traceback (most recent call last)",
+      "\u001b[1;32m<ipython-input-2-28e67d0dde0f>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m      8\u001b[0m     description = 'Sound receivers' )\n\u001b[0;32m      9\u001b[0m \u001b[1;32mif\u001b[0m \u001b[0msound_receiver_ids\u001b[0m \u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 10\u001b[1;33m     \u001b[0mfirst_sound_receiver_pos\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mva\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mget_sound_receiver_position\u001b[0m\u001b[1;33m(\u001b[0m \u001b[0msound_receiver_ids\u001b[0m\u001b[1;33m[\u001b[0m \u001b[1;36m0\u001b[0m \u001b[1;33m]\u001b[0m \u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m     11\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     12\u001b[0m \u001b[1;32mdef\u001b[0m \u001b[0mon_sound_receiver_update\u001b[0m\u001b[1;33m(\u001b[0m \u001b[0mw\u001b[0m \u001b[1;33m)\u001b[0m \u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
+      "\u001b[1;31mException\u001b[0m: Not implemented (error code 8)"
+     ]
+    }
+   ],
    "source": [
     "sound_receiver_ids = va.get_sound_receiver_ids()\n",
     "sound_receivers_dict = {}\n",
     "for sound_receiver_id in sound_receiver_ids :\n",
     "    sound_receivers_dict.update( { va.get_sound_receiver_name( sound_receiver_id ) : sound_receiver_id } )\n",
     "\n",
-    "sound_receiver_dropdown_menu = widgets.Dropdown( \n",
+    "sound_receivers_dropdown_menu = widgets.Dropdown( \n",
     "    options = sound_receivers_dict,\n",
     "    description = 'Sound receivers' )\n",
     "if sound_receiver_ids :\n",
@@ -95,9 +107,24 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 3,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "application/vnd.jupyter.widget-view+json": {
+       "model_id": "87f1cda6f53e44bbb8eb4e0af40b3b5b",
+       "version_major": 2,
+       "version_minor": 0
+      },
+      "text/plain": [
+       "A Jupyter Widget"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
    "source": [
     "sound_source_ids = va.get_sound_source_ids()\n",
     "sound_sources_dict = {}\n",