diff --git a/modules/ticket/back/models/ticket-log.json b/modules/ticket/back/models/ticket-log.json
index e46995a91..32b4afd13 100644
--- a/modules/ticket/back/models/ticket-log.json
+++ b/modules/ticket/back/models/ticket-log.json
@@ -29,13 +29,13 @@
             "type": "string"
         },
         "oldInstance": {
-            "type": "string"
+            "type": "any"
         },
         "newInstance": {
-            "type": "string"
+            "type": "any"
         },
         "changedModelId": {
-            "type": "number"
+            "type": "string"
         },
         "changedModelValue": {
             "type": "string"