diff --git a/hb_server/apps/wf/services.py b/hb_server/apps/wf/services.py
index 7ff0fbe..8df0377 100644
--- a/hb_server/apps/wf/services.py
+++ b/hb_server/apps/wf/services.py
@@ -114,7 +114,7 @@ class WfService(object):
         ticket_all_value.update(**ticket_data)
         for key, value in ticket_all_value.items():
                 if isinstance(ticket_all_value[key], str):
-                    ticket_all_value[key] = "'''" + ticket_all_value[key] + "'''"
+                    ticket_all_value[key] = "'" + ticket_all_value[key] + "'"
         if transition.condition_expression:
             for i in transition.condition_expression:
                 expression = i['expression'].format(**ticket_all_value)