diff --git a/frontend/src/components/pages/Study.js b/frontend/src/components/pages/Study.js
index f7b75d5..43831e4 100644
--- a/frontend/src/components/pages/Study.js
+++ b/frontend/src/components/pages/Study.js
@@ -1,4 +1,4 @@
-import React, { useEffect, useRef, useState } from "react";
+import React, { useEffect, useState } from "react";
 import "../../App.css";
 import Footer from "../../Footer";
 import InputField from "../InputField";
@@ -9,17 +9,18 @@ import BehaviorNormal from "../BehaviorNormal";
 import { Button } from "../Button";
 
 export default function Study() {
-  const _logger = useRef(0);
+
+  var [logger, setLogger] = useState();
 
   useEffect(() => {
-    _logger.current = new Logger({
+    logger = new Logger({
       //inputs: ["cursor", "wheel", "keyboard", "touch"],
       inputs: ["keyboard"],
       // apiUrl: "https://behavior.marcocamenzind.ch",
       apiUrl: "http://localhost:5000",
       logToConsole: true,
     });
-    _logger.current.init();
+    logger.init();
   }, []);
 
   let username = "";
@@ -32,16 +33,29 @@ export default function Study() {
     password = tmp_password;
   };
 
+  /*
+  let isStepStart = true;
+  const setIsStepStart = (tmp) => {
+    isStepStart = tmp;
+  };
+
+  let isStepNormal = false;
+  const setIsStepNormal = (tmp) => {
+    isStepNormal = tmp;
+  };
+  */
+
   const [isStepStart, setIsStepStart] = useState(true);
   const [isStepNormal, setIsStepNormal] = useState(false);
 
+
   const handleLoggerOff = () => {
-    _logger.current.stop();
+    logger.stop();
     console.log("Logger ausgeschaltet");
   };
 
   const handleLoggerOn = () => {
-    _logger.current.start();
+    logger.start();
     console.log("start logging ");
   };
 
@@ -63,7 +77,6 @@ export default function Study() {
     console.log("isStepStar", isStepStart);
     setIsStepNormal(true);
     console.log("isStepNormal", isStepNormal);
-    handleLoggerOn();
     // forceUpdate();
   };