diff --git a/sync_manager.py b/sync_manager.py
index 31f51985..a760c0b4 100644
--- a/sync_manager.py
+++ b/sync_manager.py
@@ -146,7 +146,7 @@ class SyncManager:
                 if not row_indices.empty:
                     row_idx = row_indices[0]
                     updates_to_batch.append({
-                        "range": f"{COLUMN_MAP['Archiviert']['Titel']}{row_idx + 2}",
+                        "range": f"{self.target_sheet_name}!{COLUMN_MAP['Archiviert']['Titel']}{row_idx + 2}", # <<< NEU: Sheet-Name hinzugefügt
                         "values": [["TRUE"]]
                     })
 
@@ -194,7 +194,7 @@ class SyncManager:
                     row_idx = gsheet_indexed.index.get_loc(crm_id)
                     for col_name, value in row_updates.items():
                          updates_to_batch.append({
-                            "range": f"{COLUMN_MAP[col_name]['Titel']}{row_idx + 2}",
+                            "range": f"{self.target_sheet_name}!{COLUMN_MAP[col_name]['Titel']}{row_idx + 2}", # <<< NEU: Sheet-Name hinzugefügt
                             "values": [[value]]
                         })
 
@@ -202,7 +202,7 @@ class SyncManager:
         if rows_to_append:
             self.logger.info(f"Füge {len(rows_to_append)} neue Zeilen zum Google Sheet hinzu...")
             # --- KORREKTUR HIER ---
-            self.sheet_handler.append_rows(values=rows_to_append)
+            self.sheet_handler.append_rows(values=rows_to_append, sheet_name=self.target_sheet_name)
         
         if updates_to_batch:
             self.logger.info(f"Sende {len(updates_to_batch)} Zell-Updates an das Google Sheet...")