diff --git a/middleware/app_be/services/mongodbservice.py b/middleware/app_be/services/mongodbservice.py
index b26d9c8..cf910bc 100644
--- a/middleware/app_be/services/mongodbservice.py
+++ b/middleware/app_be/services/mongodbservice.py
@@ -68,6 +68,25 @@ class MongoDBService:
 
         return True
 
+    @staticmethod
+    def updateSingle(identifier, decoded_image) -> bool:
+        resp = MongoDBService.getSingle(identifier)
+        if resp is None:
+            print("Could not update Metadata: Identifier does not exist")
+            return False
+
+        i = 0
+        while MongoDBService.getSingle(identifier + '_' + str(i)) is not None:
+            i = i + 1
+
+        if i == 0:
+            MongoDBService.createSingle(resp, identifier + '_' + str(i), decoded_image)
+        else:
+            resp = MongoDBService.getSingle(identifier + '_' + str(i - 1))
+            MongoDBService.createSingle(resp, identifier + '_' + str(i), decoded_image)
+
+        return True
+
     @staticmethod
     def deleteSingle(identifier):
         instance = MongoManager.getInstance()
@@ -82,7 +101,6 @@ class MongoDBService:
             print("Could not delete Metadata")
         return resp
 
-
     @staticmethod
     def deleteAll():
         instance = MongoManager.getInstance()
@@ -95,4 +113,4 @@ class MongoDBService:
             return resp
         except:
             print("Could not delete Metadata")
-        return resp
\ No newline at end of file
+        return resp