diff --git a/app/library/HttpAPI.py b/app/library/HttpAPI.py
index e6421442..2c308ee4 100644
--- a/app/library/HttpAPI.py
+++ b/app/library/HttpAPI.py
@@ -430,7 +430,7 @@ class HttpAPI(common):
 
         for item in data:
             try:
-                self._formatItem(item)
+                item = self._formatItem(item)
             except ValueError as e:
                 return web.json_response(data={"error": str(e), "data": item}, status=web.HTTPBadRequest.status_code)