diff --git a/index.js b/index.js
index 4fb5edd..c7bdf14 100644
--- a/index.js
+++ b/index.js
@@ -12,6 +12,8 @@ io.on('connection', (socket) => {
 
     let isFirst = true
 
+    let jsonArray
+
     function reset () {
         worker = new Worker(path.join(__dirname, 'vm.js'))
 
@@ -36,7 +38,9 @@ io.on('connection', (socket) => {
 
     reset()
 
-    socket.on('setFunctions', (jsonArray) => {
+    socket.on('setFunctions', (_jsonArray) => {
+        jsonArray = _jsonArray
+
         worker.postMessage({ type: 'setFunctions', jsonArray })
     })