diff --git a/basicauth.go b/basicauth.go
index 360615e..6ccd793 100644
--- a/basicauth.go
+++ b/basicauth.go
@@ -69,14 +69,12 @@ func (c BasicAuthClient) performReq(req *http.Request) ([]byte, error) {
 		return nil, fmt.Errorf("failed to perform request %s", httpErr)
 	}
 
+	defer resp.Body.Close()
 	body, bodyErr := io.ReadAll(resp.Body)
-	if bodyErr == nil {
-		resp.Body.Close()
-	}
 
 	if resp.StatusCode != 200 {
 		return nil, fmt.Errorf("failed to perform request with status %d", resp.StatusCode)
 	}
 
-	return body, nil
+	return body, bodyErr
 }
diff --git a/example/main.go b/example/main.go
index 36b935d..cade17f 100644
--- a/example/main.go
+++ b/example/main.go
@@ -45,7 +45,8 @@ func main() {
 	}
 
 	fmt.Printf("\nGet transaction\n")
-	trx, err4 := oauthClient.GetTransaction("a9531058-f0f7-44ff-a718-98920804ceab")
+	trxID := "a9531058-f0f7-44ff-a718-98920804ceab"
+	trx, err4 := oauthClient.GetTransaction(trxID)
 	if err4 != nil {
 		fmt.Printf("\nerr: %s\n", err4.Error())
 	} else {
@@ -80,4 +81,18 @@ func main() {
 		fmt.Printf("%v", opCancel)
 		fmt.Println("\nsuccess")
 	}
+
+	trx2, err9 := basicAuthClient.CancelTransaction("aacf07cf-9102-4b02-8172-72b7e1efd5d9", 100, "Default")
+	if err9 != nil {
+		fmt.Printf("\nerr: %s\n", err9.Error())
+	} else {
+		fmt.Printf("%v", trx2)
+		fmt.Println("\nsuccess")
+	}
+
+	payload := vivawallet.CreateTransaction{
+		Amount: 100,
+	}
+	trx3, err2 := basicAuthClient.CreateTransaction("cdc8e764-daf3-49de-9f44-c7f3b563c2d6", payload)
+	fmt.Printf("%v\nERR: %v\n", trx3, err2)
 }
diff --git a/transactions.go b/transactions.go
index 1f9028b..e98d3cb 100644
--- a/transactions.go
+++ b/transactions.go
@@ -63,21 +63,21 @@ type CreateTransaction struct {
 }
 
 type TransactionResponse struct {
-	Emv                      *string   `json:"Emv"`
-	Amount                   int       `json:"Amount"`
-	StatusID                 string    `json:"StatusId"`
-	CurrencyCode             int       `json:"CurrencyCode"`
-	TransactionID            string    `json:"TransactionId"`
-	ReferenceNumber          int       `json:"ReferenceNumber"`
-	AuthorizationID          int       `json:"AuthorizationId"`
-	RetrievalReferenceNumber int       `json:"RetrievalReferenceNumber"`
-	ThreeDSecureStatusID     int       `json:"ThreeDSecureStatusId"`
-	ErrorCode                int       `json:"ErrorCode"`
-	ErrorText                string    `json:"ErrorText"`
-	Timestamp                time.Time `json:"TimeStamp"`
-	CorrelationID            *string   `json:"CorrelationId"`
-	EventID                  int       `json:"EventId"`
-	Success                  bool      `json:"Success"`
+	Emv                      string   `json:"Emv,omitempty"`
+	Amount                   float64   `json:"Amount"`
+	StatusID                 string    `json:"StatusId,omitempty"`
+	CurrencyCode             string    `json:"CurrencyCode,omitempty"`
+	TransactionID            string    `json:"TransactionId,omitempty"`
+	ReferenceNumber          int       `json:"ReferenceNumber,omitempty"`
+	AuthorizationID          string    `json:"AuthorizationId,omitempty"`
+	RetrievalReferenceNumber string    `json:"RetrievalReferenceNumber,omitempty"`
+	ThreeDSecureStatusID     int       `json:"ThreeDSecureStatusId,omitempty"`
+	ErrorCode                int       `json:"ErrorCode,omitempty"`
+	ErrorText                string    `json:"ErrorText,omitempty"`
+	Timestamp                time.Time `json:"TimeStamp,omitempty"`
+	CorrelationID            string    `json:"CorrelationId,omitempty"`
+	EventID                  int       `json:"EventId,omitempty"`
+	Success                  bool      `json:"Success,omitempty"`
 }
 
 // CreateTransaction creates a new transaction for a recurring payment or a pre-auth