From d0a82c8bdc0dbb487c08a6a9feffedfb398e0bb8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Tue, 17 Mar 2020 23:28:57 +0100
Subject: [PATCH] Support multiselection field in EvalEnvironment

issue9144
review285001004
---
 trytond/model/modelstorage.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/trytond/model/modelstorage.py b/trytond/model/modelstorage.py
index a6141be97c..04a17a3817 100644
--- a/trytond/model/modelstorage.py
+++ b/trytond/model/modelstorage.py
@@ -1720,7 +1720,8 @@ class EvalEnvironment(dict):
                 if self._model._fields[item]._type == 'reference':
                     return str(value)
                 return value.id
-            elif isinstance(value, (list, tuple)):
+            elif (isinstance(value, (list, tuple))
+                    and value and isinstance(value[0], Model)):
                 return [r.id for r in value]
             else:
                 return value