diff --git a/AlgebraicDataflowArchitectureModel/models/OnlineBattleGame2.model b/AlgebraicDataflowArchitectureModel/models/OnlineBattleGame2.model
index 291c9eb..ccd15a7 100644
--- a/AlgebraicDataflowArchitectureModel/models/OnlineBattleGame2.model
+++ b/AlgebraicDataflowArchitectureModel/models/OnlineBattleGame2.model
@@ -27,7 +27,7 @@
 channel UpdatePoint(rid:Str) {
 	in rooms.{rid}.battle(prevState, updatePoint(hasWon, mid)) = hasWon
 	for EachMember(mno:Int) {
-		in rooms.{rid}.members.{mno}.id(prevMid:Str, updatePoint(hasWon, mid)) = mid 
+		ref rooms.{rid}.members.{mno}.id(mid:Str, updatePoint(hasWon, mid))
 		out accounts.{mid}.point(prevPoint:Int, updatePoint(hasWon, mid)) = if(hasWon, prevPoint + 1, prevPoint)
 	}
-}
+}
\ No newline at end of file