diff --git a/AlgebraicDataflowArchitectureModel/models/GroupChat.model b/AlgebraicDataflowArchitectureModel/models/GroupChat.model
index d8b0c42..f199175 100644
--- a/AlgebraicDataflowArchitectureModel/models/GroupChat.model
+++ b/AlgebraicDataflowArchitectureModel/models/GroupChat.model
@@ -19,9 +19,9 @@
 }
 
 channel Notify(gid:Str) {
-	in groups.{gid}.messages(prevMesList, notify(id)) = mesList
+	in groups.{gid}.messages(prevMesList, notify(m)) = mesList
 	for EachMember(mno:Int) {
-		ref groups.{gid}.members.{mno}(id:Str, notify(id))
-		out accounts.{id}.notifications(prevNtMap:Map, notify(id)) = insert(prevNtMap, gid, true)
+		ref groups.{gid}.members.{mno}(m.{mno}:Str, notify(m))
+		out accounts.{m.{mno}}.notifications(prevNtMap:Map, notify(m)) = insert(prevNtMap, gid, true)
 	}
 }