diff --git a/src/mcts.jl b/src/mcts.jl
index a0b707c..bec27b0 100644
--- a/src/mcts.jl
+++ b/src/mcts.jl
@@ -126,6 +126,8 @@ julia>
   [] update docstring
   [] try loop should limit to 3 times. if not succeed, skip
   [] newNodeKey ∉ keys(node.children). New state may have semantic vector close enought to one of existing child state. Which can be assume that they are the same state semantically-wise. 
+  [WORKING] add reflector()
+
 # Signature
 """
 function expand(a::T1, node::MCTSNode, decisionMaker::Function,