diff --git a/docs/Examples/BbhInitialData/BbhInitialData.ipynb b/docs/Examples/BbhInitialData/BbhInitialData.ipynb
index a1fdefe2ce6d..0cc51c74ab8b 100644
--- a/docs/Examples/BbhInitialData/BbhInitialData.ipynb
+++ b/docs/Examples/BbhInitialData/BbhInitialData.ipynb
@@ -65,8 +65,14 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "SPECTRE_BUILD_DIR = \"/Users/nlf/Work/spectre/build-Default-Release\"\n",
-    "SPECTRE_HOME = \"/Users/nlf/Projects/spectre/develop\""
+    "# Please define these environment variables \n",
+    "# if not defined or specify their path here\n",
+    "\n",
+    "# The source directory. \n",
+    "SPECTRE_SOURCE = os.getenv(\"SPECTRE_SOURCE\")\n",
+    "\n",
+    "# The directory containing compiled executables\n",
+    "SPECTRE_INSTALL = os.getenv(\"SPECTRE_INSTALL\")"
    ]
   },
   {
@@ -88,20 +94,31 @@
    "source": [
     "# Load example input file\n",
     "load_input_file_path = os.path.join(\n",
-    "    SPECTRE_HOME, \"tests/InputFiles/Xcts/BinaryBlackHole.yaml\"\n",
+    "    SPECTRE_SOURCE, \"tests/InputFiles/Xcts/BinaryBlackHole.yaml\"\n",
     ")\n",
     "yaml = YAML()\n",
+    "modified_input_file = []\n",
+    "\n",
+    "# Modify the input file\n",
     "with open(load_input_file_path, \"r\") as open_input_file:\n",
-    "    input_file = yaml.load(open_input_file)\n",
+    "    input_file = yaml.load_all(open_input_file)\n",
+    "\n",
+    "    for section in input_file:\n",
+    "        dsec = dict(section)\n",
+    "        keys = dsec.keys()\n",
+    "\n",
+    "        if \"Observers\" in keys:\n",
+    "            dsec[\"Observers\"].update({\"VolumeFileName\": \"BbhVolume\"})\n",
+    "            dsec[\"Observers\"].update({\"ReductionFileName\": \"BbhReductions\"})\n",
+    "\n",
+    "        modified_input_file.append(dsec)\n",
     "\n",
-    "# Modify example input file\n",
-    "# - Set output file names\n",
-    "input_file[\"Observers\"][\"VolumeFileName\"] = \"BbhVolume\"\n",
-    "input_file[\"Observers\"][\"ReductionFileName\"] = \"BbhReductions\"\n",
+    "        if \"DomainCreator\" in keys:\n",
+    "            dsec[\"DomainCreator\"][\"BinaryCompactObject\"].pop(\"CubeScale\")\n",
     "\n",
     "# Write modified input file\n",
     "with open(\"Bbh.yaml\", \"w\") as open_input_file:\n",
-    "    yaml.dump(input_file, open_input_file)"
+    "    yaml.dump_all(modified_input_file, open_input_file)"
    ]
   },
   {
@@ -226,7 +243,7 @@
    ],
    "source": [
     "NUM_CORES = multiprocessing.cpu_count()\n",
-    "SOLVE_XCTS = os.path.join(SPECTRE_BUILD_DIR, \"bin/SolveXcts\")\n",
+    "SOLVE_XCTS = os.path.join(SPECTRE_INSTALL, \"bin/SolveXcts\")\n",
     "!{SOLVE_XCTS} --input-file Bbh.yaml +p {NUM_CORES}"
    ]
   },