diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..56635ff
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,15 @@
+{
+    // 使用 IntelliSense 了解相关属性。 
+    // 悬停以查看现有属性的描述。
+    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Run Example",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "program": "${workspaceFolder}/example"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/delayqueue.go b/delayqueue.go
index c54e624..8e81478 100644
--- a/delayqueue.go
+++ b/delayqueue.go
@@ -218,16 +218,16 @@ func (q *DelayQueue) SendDelayMsg(payload string, duration time.Duration, opts .
 const pending2ReadyScript = `
 local msgs = redis.call('ZRangeByScore', KEYS[1], '0', ARGV[1])  -- get ready msg
 if (#msgs == 0) then return end
-local args2 = {'LPush', KEYS[2]} -- push into ready
+local args2 = {} -- keys to push into ready
 for _,v in ipairs(msgs) do
 	table.insert(args2, v) 
     if (#args2 == 4000) then
-		redis.call(unpack(args2))
-		args2 = {'LPush', KEYS[2]}
+		redis.call('LPush', KEYS[2], unpack(args2))
+		args2 = {}
 	end
 end
 if (#args2 > 2) then 
-	redis.call(unpack(args2))
+	redis.call('LPush', KEYS[2], unpack(args2))
 end
 redis.call('ZRemRangeByScore', KEYS[1], '0', ARGV[1])  -- remove msgs from pending
 `
diff --git a/exmaple/main.go b/example/main.go
similarity index 100%
rename from exmaple/main.go
rename to example/main.go