diff --git a/README.md b/README.md
index 05135d9..12da429 100644
--- a/README.md
+++ b/README.md
@@ -94,13 +94,11 @@ params = {
 	ship_zip_code: '33602',
 	ship_country: 'US',
 };
-flp.validate(params, flpResults);
-
-function flpResults(err, res, data) {
-	if (!err && res.statusCode == 200) {
+flp.validate(params, (err, data) => {
+	if (!err) {
 		console.log(data);
 	}
-}
+});
 ```
 
 
@@ -123,13 +121,11 @@ params = {
 	id: '20170906MXFHSTRF',
 	id_type: 'fraudlabspro_id',
 };
-flp.getTransaction(params, flpResults);
-
-function flpResults(err, res, data) {
-	if (!err && res.statusCode == 200) {
+flp.getTransaction(params, (err, data) => {
+	if (!err) {
 		console.log(data);
 	}
-}
+});
 ```
 
 
@@ -154,13 +150,11 @@ params = {
 	action: 'APPROVE',
 	note: 'This customer made a valid purchase before.',
 };
-flp.feedback(params, flpResults);
-
-function flpResults(err, res, data) {
-	if (!err && res.statusCode == 200) {
+flp.feedback(params, (err, data) => {
+	if (!err) {
 		console.log(data);
 	}
-}
+});
 ```
 
 
@@ -192,13 +186,11 @@ params = {
 	otp_timeout: 3600,
 	country_code: 'US',
 };
-sms.sendSMS(params, flpResults);
-
-function flpResults(err, res, data) {
-	if (!err && res.statusCode == 200) {
+sms.sendSMS(params, (err, data) => {
+	if (!err) {
 		console.log(data);
 	}
-}
+});
 ```
 
 
@@ -221,11 +213,9 @@ params = {
 	tran_id: 'UNIQUE_TRANS_ID',
 	otp: 'OTP_RECEIVED',
 };
-sms.verifyOTP(params, flpResults);
-
-function flpResults(err, res, data) {
-	if (!err && res.statusCode == 200) {
+sms.verifyOTP(params, (err, data) => {
+	if (!err) {
 		console.log(data);
 	}
-}
+});
 ```
\ No newline at end of file
diff --git a/package.json b/package.json
index 704fc15..9927b31 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "fraudlabspro-nodejs",
-	"version": "2.0.0",
+	"version": "2.1.0",
 	"description": "FraudLabs Pro Node.js module enables users to easily implement fraud detection feature using the FraudLabs Pro API.",
 	"keywords": ["fraud prevention", "fraud detection", "fraud checker", "fraudlabs pro", "fraudlabspro", "fraud protection"],
 	"homepage": "https://github.com/fraudlabspro/fraudlabspro-nodejs",
diff --git a/src/fraudlabspro.js b/src/fraudlabspro.js
index 3eb5d2e..05d588b 100644
--- a/src/fraudlabspro.js
+++ b/src/fraudlabspro.js
@@ -1,6 +1,6 @@
 var https = require('https');
 var crypto = require('crypto');
-var VERSION = '2.0.0';
+var VERSION = '2.1.0';
 var SOURCE = 'FraudLabsPro Node.js SDK';
 var FORMAT = 'json';
 
@@ -136,7 +136,7 @@ class FraudValidation {
         let req = https.request(options, function (res) {
             res.on('data', (chunk) => (d = d + chunk));
             res.on('end', function () {
-                callback(null, res, JSON.parse(d));
+                callback(null, JSON.parse(d));
             });
         });
 
@@ -184,7 +184,7 @@ class FraudValidation {
         let req = https.request(options, function (res) {
             res.on('data', (chunk) => (d = d + chunk));
             res.on('end', function () {
-                callback(null, res, JSON.parse(d));
+                callback(null, JSON.parse(d));
             });
         });
 
@@ -220,7 +220,7 @@ class FraudValidation {
         let req = https.get(urlStr, function (res) {
             res.on('data', (chunk) => (d = d + chunk));
             res.on('end', function () {
-                callback(null, res, JSON.parse(d));
+                callback(null, JSON.parse(d));
             });
         });
 
@@ -275,7 +275,7 @@ class SMSVerification {
         let req = https.request(options, function (res) {
             res.on('data', (chunk) => (d = d + chunk));
             res.on('end', function () {
-                callback(null, res, JSON.parse(d));
+                callback(null, JSON.parse(d));
             });
         });
 
@@ -322,7 +322,7 @@ class SMSVerification {
         let req = https.request(options, function (res) {
             res.on('data', (chunk) => (d = d + chunk));
             res.on('end', function () {
-                callback(null, res, JSON.parse(d));
+                callback(null, JSON.parse(d));
             });
         });
 
diff --git a/src/test.js b/src/test.js
index 5273e29..73766db 100644
--- a/src/test.js
+++ b/src/test.js
@@ -9,34 +9,48 @@
 // params = {
 	// ip: '8.8.8.8'
 // };
-// flp.validate(params, flpResults);
+// flp.validate(params, (err, data) => {
+	// if (!err) {
+		// console.log(data);
+	// }
+// });
 
 // params = {
 	// id: '20210716AZ1ZIC',
 	// action: 'REJECT',
 // };
-// flp.feedback(params, flpResults);
+// flp.feedback(params, (err, data) => {
+	// if (!err) {
+		// console.log(data);
+	// }
+// });
 
 // params = {
 	// id: '20210716AZ1ZIC',
 	// id_type: 'fraudlabspro_id',
 // };
-// flp.getTransaction(params, flpResults);
+// flp.getTransaction(params, (err, data) => {
+	// if (!err) {
+		// console.log(data);
+	// }
+// });
 
 // params = {
 	// tel: '+1234567890',
 	// mesg: 'Hello, your OTP is <otp>.',
 // };
-// sms.sendSMS(params, flpResults);
+// sms.sendSMS(params, (err, data) => {
+	// if (!err) {
+		// console.log(data);
+	// }
+// });
 
 // params = {
 	// tran_id: 'fG8Ee2w88DBD3HjzBz0',
 	// otp: '649114',
 // };
-// sms.verifyOTP(params, flpResults);
-
-function flpResults(err, res, data) {
-	if (!err && res.statusCode == 200) {
-		console.log(data);
-	}
-}
+// sms.verifyOTP(params, (err, data) => {
+	// if (!err) {
+		// console.log(data);
+	// }
+// });