diff --git a/03-UnrealEngine/Sequence/Sequence Runtime Binding.md b/03-UnrealEngine/Sequence/Sequence Runtime Binding.md
index 24cf5ec..b7aaec8 100644
--- a/03-UnrealEngine/Sequence/Sequence Runtime Binding.md	
+++ b/03-UnrealEngine/Sequence/Sequence Runtime Binding.md	
@@ -499,4 +499,9 @@ SequenceRecorder模块的基类是ISequenceRecorder。
 
 
 TODO：
-1. https://www.unrealengine.com/marketplace/zh-CN/product/blueprintsequencertrack
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+1. https://www.unrealengine.com/marketplace/zh-CN/product/blueprintsequencertrack
+2. 
+
+可参考Tracker实现：
+- GeometryCacheTracks & GeometryCacheSequencer
+- MovieSceneEventTrack & MovieSceneEventSection
\ No newline at end of file