diff --git a/Godot GDScript Trick.md b/Godot GDScript Trick.md
index 2969c9a..9506845 100644
--- a/Godot GDScript Trick.md	
+++ b/Godot GDScript Trick.md	
@@ -57,27 +57,27 @@ static func example():
 	
 func _has(key:String)->bool:
 	return _all_events.has(key)
-func _get(key) -> Variant:
+func _get_actions(key:String) -> Variant:
 	return _all_events[key]
-
+	
 func add(key:String,action:Callable):
 	if !_has(key):
 		var empty  : Array[Callable] = []
 		_all_events[key] = empty
-	_all_events[key].append(action)
+	_get_actions(key).append(action)
 
 func erase(key:String, action:Callable):
 	if _has(key):
-		_get(key).erase(action)
+		_get_actions(key).erase(action)
 
 func trigger(event_key:String):
 	if _has(event_key):
-		for event in _all_events[event_key]:
+		for event in _get_actions(event_key):
 			event.call()
 
 func trigger_data(event_key:String, data):
 	if _has(event_key):
-		for event in _all_events[event_key]:
+		for event in _get_actions(event_key):
 			event.call(data)
 ```
 推荐使用样例
diff --git a/TODO.md b/TODO.md
index ea431dc..30c9de5 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,6 +1,6 @@
 ## 2013-10-14
 
-- 做好 Signal up 的解决方案文档
+- [x] 做好 Signal up 的解决方案文档
 - 把游戏的UI流程进行一个梳理与绘图
 - 在引擎中实现这个流程， 并用Signal进行关联， 不含非UI的逻辑代码
 - 修改与验收阶段