diff --git a/examples/query.js b/examples/query.js
index 91290ee..86f7542 100644
--- a/examples/query.js
+++ b/examples/query.js
@@ -9,9 +9,9 @@ const { Driver } = require('..');
 const config = require('../test/config');
 
 var driver = new Driver();
-
 driver.connect(config)
   .then((conn) => {
+    conn.autoCommit = false;
     conn.execute('select tablename from system.tables')
       .then((results) => {
         results.getRows()
@@ -19,18 +19,34 @@ driver.connect(config)
             console.log(rows);
           });
       });
+    conn.commit();
   });
 
 // async variation
-/*
-async function query(conn, sql) {
-  let results = await conn.execute(sql);
+async function query(conn, sql, params) {
+  let results = await conn.execute(sql,params);
   return await results.getRows();
 }
 
 (async () => {
   let conn = await driver.connect(config);
-  let rows = await query(conn, 'select tablename from system.tables');
-  console.log(rows);
+  console.log(conn.autoCommit);
+  conn.autoCommit = true;
+  console.log(conn.autoCommit);
+  await conn.execute("start transaction");
+  let results = await conn.execute('select tablename from system.tables limit 2');
+  let rows = await results.getRows();
+  for (let i = 0; i < rows.length; i++) {
+    let results1 = await conn.execute("select field from system.fields where tablename = ? limit 2",[rows[i].TABLENAME]);
+    let rows1 = await results1.getRows();
+    for (let j = 0; j < rows1.length; j++) {
+      console.log(rows[i].TABLENAME,rows1[j].FIELD);
+    }
+    results1.close();
+  }
+  results.close();
+   conn.commit();
+//  await conn.execute("commit");
+  console.log(conn.autoCommit);
+  conn.close();
 })()
-*/
diff --git a/lib/rest.js b/lib/rest.js
index a633441..8cf81fa 100644
--- a/lib/rest.js
+++ b/lib/rest.js
@@ -14,7 +14,7 @@ var port = 9000;
 if (process.env[portVarName] && process.env[portVarName].trim() !== '') {
   const parsedValue = Number(process.env[portVarName]);
   if (isNaN(parsedValue) || !Number.isInteger(parsedValue)) {
-    console.error(`Error: Environment variable ${portVarName} has an invalid integer value: "${process.env[portVarName}".`);
+    console.error(`Error: Environment variable ${portVarName} has an invalid integer value: ${process.env[portVarName]}.`);
     process.exit(1);
   }
   port = parsedValue;
@@ -35,7 +35,7 @@ class Rest {
     return Rest.instance;
   }
 
-  addStats(key, sfunc) {
+  addInfo(key, sfunc) {
     this.info[key] = sfunc;
   }
 
@@ -62,7 +62,7 @@ class Rest {
 
   constructor() {
     Rest.instance = this;
-    
+
     this.info = {};
     this.logs = [];
     this.name = 'REST Server';
@@ -83,7 +83,7 @@ class Rest {
       });
 
       // Add all supported URL command paths
-      
+
       this._express.get('/shutdown', (req, res) => {
         this.gracefulShutdown();
         res.send(JSON.stringify('OK'));
diff --git a/src/NuoJsAddon.h b/src/NuoJsAddon.h
index e4a71a9..4a53236 100644
--- a/src/NuoJsAddon.h
+++ b/src/NuoJsAddon.h
@@ -35,3 +35,5 @@ using namespace v8;
 #else
   #define TRACE(msg)
 #endif
+
+#endif