diff --git a/backend/app/engine/engine.py b/backend/app/engine/engine.py
index 1111d81..c7a9869 100644
--- a/backend/app/engine/engine.py
+++ b/backend/app/engine/engine.py
@@ -66,7 +66,6 @@ def get_Retriever(index,**kwargs):
         retriever = index.as_retriever(**kwargs)
     return retriever
 
-
 def get_synthesizer():
     return CustomTreeResponse(
             llm=Settings.llm,
diff --git a/backend/app/engine/generate.py b/backend/app/engine/generate.py
index 423d2e3..388f597 100644
--- a/backend/app/engine/generate.py
+++ b/backend/app/engine/generate.py
@@ -89,7 +89,7 @@ def generate_datasource():
 class PropertyGraphChache:
     def generate(self): 
         GRAPH_STORE_TYPE = os.getenv("GRAPH_STORE_TYPE", "")
-        GRAPH_STORAGE_DIR = os.getenv("GRAPH_STORAGE_DIR", "storage_graph")
+        GRAPH_STORAGE_DIR = os.getenv("GRAPH_STORAGE_PATH", "storage_graph")
         prjInfos = getProjectInfos()
         for prjInfo in prjInfos:
             prjFlag = prjInfo['flag']