diff --git a/doc.md b/doc.md
index b771ed6..17676c8 100644
--- a/doc.md
+++ b/doc.md
@@ -137,13 +137,14 @@ robotgo.MoveMouse(100, 100)
 
 ####Arguments:
 
-    button (optional) - Accepts left, right, or middle. Defaults to left.
+    button (optional) - Accepts "left", "right", or "center". Defaults to left.
     double (optional) - Set to true to perform a double click. Defaults to false.
 
 ####Examples:
 
 ```Go
     robogo.MouseClick()
+    robogo.MouseClick("left",true)
 ```
 
 ###<h3 id="MouseToggle">.MouseToggle(down, button)</h3>
@@ -153,12 +154,13 @@ robotgo.MoveMouse(100, 100)
 ####Arguments:
 
     down (optional) - Accepts down or up. Defaults to down.
-    button (optional) - Accepts left, right, or middle. Defaults to left.
+    button (optional) - Accepts "left", "right", or "center". Defaults to left.
 
 ####Examples:
 
 ```Go
 robotgo.MouseToggle("down")
+robotgo.MouseToggle("down", "right")
 ```
 
 ###<h3 id="DragMouse">.DragMouse(x, y)</h3>
diff --git a/robotgo.go b/robotgo.go
index f811587..04ad138 100644
--- a/robotgo.go
+++ b/robotgo.go
@@ -194,7 +194,16 @@ func MouseClick(args ...interface{}) {
 func MouseToggle(args ...interface{}) {
 	var button C.MMMouseButton
 	Try(func() {
-		button = args[1].(C.MMMouseButton)
+		// button = args[1].(C.MMMouseButton)
+		if args[1].(string) == "left" {
+			button = C.LEFT_BUTTON
+		}
+		if args[1].(string) == "center" {
+			button = C.CENTER_BUTTON
+		}
+		if args[1].(string) == "right" {
+			button = C.RIGHT_BUTTON
+		}
 	}, func(e interface{}) {
 		// Println("err:::", e)
 		button = C.LEFT_BUTTON
diff --git a/zh_doc.md b/zh_doc.md
index a526fb9..e8eb7ad 100644
--- a/zh_doc.md
+++ b/zh_doc.md
@@ -145,13 +145,14 @@ robotgo.MoveMouse(100, 100)
 
 ####参数:
 
-    button (optional) - Accepts left, right, or middle. Defaults to left.
+    button (optional) - Accepts left, right, or center. Defaults to left.
     double (optional) - Set to true to perform a double click. Defaults to false.
 
 ####例子:
 
 ```Go
     robogo.MouseClick()
+    robogo.MouseClick("left",true)
 ```
 
 ###<h3 id="MouseToggle">.MouseToggle(down, button)</h3>
@@ -162,12 +163,13 @@ robotgo.MoveMouse(100, 100)
 ####参数:
 
     down (optional) - Accepts down or up. Defaults to down.
-    button (optional) - Accepts left, right, or middle. Defaults to left.
+    button (optional) - Accepts "left", "right", or "center". Defaults to left.
 
 ####例子:
 
 ```Go
 robotgo.MouseToggle("down")
+robotgo.MouseToggle("down", "right")
 ```
 
 ###<h3 id="DragMouse">.DragMouse(x, y)</h3>