Fix to update script

prs.shared/Database Update Scripts/Update_7_34.cs

@@ -44,7 +44,7 @@ namespace PRS.Shared
                 Data = data
             };
             DbFactory.Provider.Save(document);
-            return document.ID;
+            return id;
         }
 
         private DFLayoutEmbeddedMediaValue ConvertImage(byte[] data)