diff --git a/cfg/create_tests.json b/cfg/create_tests.json
index eaceaa5..bcac278 100644
--- a/cfg/create_tests.json
+++ b/cfg/create_tests.json
@@ -340,7 +340,7 @@
           "layout_type": "horizontal",
           "base_x": 1000,
           "base_y": 3000,
-          "spacing": 1500
+          "spacing": 2000
         },
         {
           "name": "POT-MA30@@",
@@ -348,7 +348,7 @@
           "layout_type": "horizontal",
           "base_x": 1000,
           "base_y": 2000,
-          "spacing": 1500
+          "spacing": 2000
         },
         {
           "name": "POT-UC30@@",
@@ -356,7 +356,7 @@
           "layout_type": "horizontal",
           "base_x": 1000,
           "base_y": 1000,
-          "spacing": 1500
+          "spacing": 2000
         }
       ],
       "renaming_frames": [
diff --git a/lib/create_example.py b/lib/create_example.py
index 8c087aa..4b451fc 100644
--- a/lib/create_example.py
+++ b/lib/create_example.py
@@ -90,6 +90,9 @@ class TestDataGenerator:
             {'name': '0', 'color': 7},  # Standard-Layer
             {'name': 'ILS_MOTOR', 'color': 7},
             {'name': 'ILS_RENAMER', 'color': 1},  # Rot
+            {'name': 'ILS_Eingang', 'color': 7},  # BG-Symbole
+            {'name': 'ILS_Ausgang', 'color': 7},  # MB-Symbole
+            {'name': 'ILS_POT-Erdung', 'color': 7},  # POT-Symbole
             {'name': 'VALIDATION_ERROR', 'color': 1},  # Rot für Fehlerkreise
             {'name': 'TEXT-D', 'color': -7},  # Ausgeschaltet (negativ)
             {'name': 'TEXT-E', 'color': 7},
@@ -604,6 +607,22 @@ class TestDataGenerator:
             print("Fehler: io-Block konnte nicht erstellt werden")
             return
 
+        # Prüfe ob POT-Symbole in der Scene verwendet werden
+        if self.config and 'test_scenes' in self.config and scene_name in self.config['test_scenes']:
+            scene = self.config['test_scenes'][scene_name]
+            if 'pot_groups' in scene and scene['pot_groups']:
+                print("POT-Symbole erkannt, lade ILS_POT-Erdung Block...")
+                # Lade POT-Block aus Referenzdatei
+                pot_reference_file = os.path.join(PROJECT, 'testdata', 'Nummerierung_IO.dxf')
+                if os.path.exists(pot_reference_file):
+                    pot_block = self.load_block_from_file(pot_reference_file, 'ILS_POT-Erdung')
+                    if pot_block:
+                        print(f"POT-Block 'ILS_POT-Erdung' erfolgreich geladen")
+                    else:
+                        print(f"WARNUNG: POT-Block konnte nicht aus {pot_reference_file} geladen werden")
+                else:
+                    print(f"WARNUNG: Referenzdatei {pot_reference_file} nicht gefunden")
+
         # Wenn Config geladen ist, verwende sie, ansonsten Hard-coded Defaults
         if self.config and 'test_scenes' in self.config and scene_name in self.config['test_scenes']:
             print(f"Verwende JSON-Config für {scene_name}...")
diff --git a/lib/create_numbers.py b/lib/create_numbers.py
index cf69773..16d3dc4 100644
--- a/lib/create_numbers.py
+++ b/lib/create_numbers.py
@@ -344,7 +344,7 @@ def enumerate_symbols(symbols, attributes):
         # Ersetze @-Zeichen durch Zahlen
         # Zähle wie viele @ im Template sind
         at_count = name_template.count('@')
-        number_str = str(counter).zfill(at_count)
+        number_str = oct(counter)[2:].zfill(at_count)
 
         # Aktualisiere Attribute im Symbol
         for attrib in symbol['entity'].attribs: