diff --git a/metagpt/environment/mgx/mgx_env.py b/metagpt/environment/mgx/mgx_env.py
index ab515e070..33160cfd8 100644
--- a/metagpt/environment/mgx/mgx_env.py
+++ b/metagpt/environment/mgx/mgx_env.py
@@ -31,11 +31,11 @@ class MGXEnv(Environment):
 
         if user_defined_recipient:
             # human user's direct chat message to a certain role
-
-            if self.get_role(user_defined_recipient).is_idle:
-                # User starts a new direct chat with a certain role, expecting a direct chat response from the role; Other roles including TL should not be involved.
-                # If the role is not idle, it means the user helps the role with its current work, in this case, we handle the role's response message as usual.
-                self.direct_chat_roles.add(user_defined_recipient)
+            for role_name in message.send_to:
+                if self.get_role(role_name).is_idle:
+                    # User starts a new direct chat with a certain role, expecting a direct chat response from the role; Other roles including TL should not be involved.
+                    # If the role is not idle, it means the user helps the role with its current work, in this case, we handle the role's response message as usual.
+                    self.direct_chat_roles.add(role_name)
 
             self._publish_message(message)
             # # bypass team leader, team leader only needs to know but not to react (commented out because TL doesn't understand the message well in actual experiments)