diff --git a/request.go b/request.go
index e2d3b8a..ed11c98 100644
--- a/request.go
+++ b/request.go
@@ -2,169 +2,169 @@ package midtrans
 
 // Represent the transaction details
 type ItemDetail struct {
-    Id string `json:"id"`
-    Name string `json:"name"`
-    Price float64 `json:"price"`
-    Qty int32 `json:"quantity"`
+	Id    string  `json:"id"`
+	Name  string  `json:"name"`
+	Price float64 `json:"price"`
+	Qty   int32   `json:"quantity"`
 }
 
 type CustAddress struct {
-    FName string `json:"first_name"`
-    LName string `json:"last_name"`
-    Phone string `json:"phone"`
-    Address string `json:"address"`
-    City string `json:"city"`
-    Postcode string `json:"postal_code"`
-    CountryCode string `json:"country_code"`
+	FName       string `json:"first_name"`
+	LName       string `json:"last_name"`
+	Phone       string `json:"phone"`
+	Address     string `json:"address"`
+	City        string `json:"city"`
+	Postcode    string `json:"postal_code"`
+	CountryCode string `json:"country_code"`
 }
 
 // Represent the customer detail
 type CustDetail struct {
-    // first name
-    FName string `json:"first_name"`
+	// first name
+	FName string `json:"first_name"`
 
-    // last name
-    LName string `json:"last_name"`
+	// last name
+	LName string `json:"last_name"`
 
-    Email string `json:"email"`
-    Phone string `json:"phone"`
-    BillAddr CustAddress `json:"billing_address"`
-    ShipAddr CustAddress `json:"customer_address"`
+	Email    string      `json:"email"`
+	Phone    string      `json:"phone"`
+	BillAddr CustAddress `json:"billing_address"`
+	ShipAddr CustAddress `json:"customer_address"`
 }
 
 type TransactionDetails struct {
-    OrderID string `json:"order_id"`
-    GrossAmt float64 `json:"gross_amount"`
+	OrderID  string  `json:"order_id"`
+	GrossAmt float64 `json:"gross_amount"`
 }
 
 type CreditCardDetail struct {
-    TokenID string `json:"token_id"`
-    Bank string `json:"bank,omitempty"`
-    Bins []string `json:"bins,omitempty"`
-    InstallmentTerm []int8 `json:"installment_term,omitempty"`
-    Type string `json:"type,omitempty"`
-    // indicate if generated token should be saved for next charge
-    SaveTokenID bool `json:"save_token_id,omitempty"`
-    SavedTokenIdExpireAt string `json:"saved_token_id_expired_at,omitempty"`
+	TokenID         string   `json:"token_id"`
+	Bank            string   `json:"bank,omitempty"`
+	Bins            []string `json:"bins,omitempty"`
+	InstallmentTerm []int8   `json:"installment_term,omitempty"`
+	Type            string   `json:"type,omitempty"`
+	// indicate if generated token should be saved for next charge
+	SaveTokenID          bool   `json:"save_token_id,omitempty"`
+	SavedTokenIdExpireAt string `json:"saved_token_id_expired_at,omitempty"`
 }
 
 type PermataBankTransferDetail struct {
-    Bank Bank `json:"bank"`
+	Bank Bank `json:"bank"`
 }
 
 type BCABankTransferLangDetail struct {
-    LangID string `json:"id,omitempty"`
-    LangEN string `json:"id,omitempty"`
+	LangID string `json:"id,omitempty"`
+	LangEN string `json:"en,omitempty"`
 }
 
 /*
-    Example of usage syntax:
-    midtrans.BCABankTransferDetail{
-        FreeText: {
-            Inquiry: []midtrans.BCABankTransferLangDetail{
-                {
-                    LangEN: "Test",
-                    LangID: "Coba",
-                },
-            },
-        },
-    }
- */
+   Example of usage syntax:
+   midtrans.BCABankTransferDetail{
+       FreeText: {
+           Inquiry: []midtrans.BCABankTransferLangDetail{
+               {
+                   LangEN: "Test",
+                   LangID: "Coba",
+               },
+           },
+       },
+   }
+*/
 type BCABankTransferDetail struct {
-    Bank Bank `json:"bank"`
-    VaNumber string `json:"va_number"`
-    FreeText struct {
-        Inquiry []BCABankTransferDetail `json:"inquiry"`
-        Payment []BCABankTransferDetail `json:"payment"`
-    } `json:"free_text"`
+	Bank     Bank   `json:"bank"`
+	VaNumber string `json:"va_number"`
+	FreeText struct {
+		Inquiry []BCABankTransferLangDetail `json:"inquiry"`
+		Payment []BCABankTransferLangDetail `json:"payment"`
+	} `json:"free_text"`
 }
 
 type MandiriBillBankTransferDetail struct {
-    BillInfo1 string `json:"bill_info1"`
-    BillInfo2 string `json:"bill_info2"`
+	BillInfo1 string `json:"bill_info1"`
+	BillInfo2 string `json:"bill_info2"`
 }
 
 type BankTransferDetail struct {
-    *PermataBankTransferDetail
-    *BCABankTransferDetail
-    *MandiriBillBankTransferDetail
+	*PermataBankTransferDetail
+	*BCABankTransferDetail
+	*MandiriBillBankTransferDetail
 }
 
 // Internet Banking for BCA KlikPay
 type BCAKlikPayDetail struct {
-    // 1 = normal, 2 = installment, 3 = normal + installment
-    Type string `json:"type"`
-    Desc string `json:"description"`
-    MiscFee int64 `json:"misc_fee,omitempty"`
+	// 1 = normal, 2 = installment, 3 = normal + installment
+	Type    string `json:"type"`
+	Desc    string `json:"description"`
+	MiscFee int64  `json:"misc_fee,omitempty"`
 }
 
 type BCAKlikBCADetail struct {
-    Desc string `json:"description"`
-    UserID string `json:"user_id"`
+	Desc   string `json:"description"`
+	UserID string `json:"user_id"`
 }
 
 type MandiriClickPayDetail struct {
-    CardNumber string `json:"card_number"`
-    Input1 string `json:"input1"`
-    Input2 string `json:"input2"`
-    Input3 string `json:"input3"`
-    Token string `json:"token"`
+	CardNumber string `json:"card_number"`
+	Input1     string `json:"input1"`
+	Input2     string `json:"input2"`
+	Input3     string `json:"input3"`
+	Token      string `json:"token"`
 }
 
 type CIMBClicksDetail struct {
-    Desc string `json:"description"`
+	Desc string `json:"description"`
 }
 
 type TelkomselCashDetail struct {
-    Promo bool `json:"promo"`
-    IsReversal int8 `json:"is_reversal"`
-    Customer string `json:"customer"`
+	Promo      bool   `json:"promo"`
+	IsReversal int8   `json:"is_reversal"`
+	Customer   string `json:"customer"`
 }
 
 type IndosatDompetkuDetail struct {
-    MSISDN string `json:"msisdn"`
+	MSISDN string `json:"msisdn"`
 }
 
 type MandiriEcashDetail struct {
-    Desc string `json:"description"`
+	Desc string `json:"description"`
 }
 
 type ConvStoreDetail struct {
-    Store string `json:"store"`
-    Message string `json:"message"`
+	Store   string `json:"store"`
+	Message string `json:"message"`
 }
 
 // Represent the request payload
 type ChargeReq struct {
-    PaymentType PaymentType `json:"payment_type"`
-    TransactionDetails TransactionDetails `json:"transaction_details"`
+	PaymentType        PaymentType        `json:"payment_type"`
+	TransactionDetails TransactionDetails `json:"transaction_details"`
 
-    CreditCard *CreditCardDetail `json:"credit_card,omitempty"`
-    BankTransfer *BankTransferDetail `json:"bank_transfer,omitempty"`
+	CreditCard   *CreditCardDetail   `json:"credit_card,omitempty"`
+	BankTransfer *BankTransferDetail `json:"bank_transfer,omitempty"`
 
-    BCAKlikPay *BCAKlikPayDetail `json:"bca_klikpay,omitempty"`
-    BCAKlikBCA *BCAKlikBCADetail `json:"bca_klikbca,omitempty"`
-    MandiriClickPay *MandiriClickPayDetail `json:"mandiri_clickpay,omitempty"`
-    CIMBClicks *CIMBClicksDetail `json:"cimb_clicks,omitempty"`
-    TelkomselCash *TelkomselCashDetail `json:"telkomsel_cash,omitempty"`
-    IndosatDompetku *IndosatDompetkuDetail `json:"indosat_dompetku,omitempty"`
+	BCAKlikPay      *BCAKlikPayDetail      `json:"bca_klikpay,omitempty"`
+	BCAKlikBCA      *BCAKlikBCADetail      `json:"bca_klikbca,omitempty"`
+	MandiriClickPay *MandiriClickPayDetail `json:"mandiri_clickpay,omitempty"`
+	CIMBClicks      *CIMBClicksDetail      `json:"cimb_clicks,omitempty"`
+	TelkomselCash   *TelkomselCashDetail   `json:"telkomsel_cash,omitempty"`
+	IndosatDompetku *IndosatDompetkuDetail `json:"indosat_dompetku,omitempty"`
 
-    ConvStore *ConvStoreDetail `json:"cstore,omitempty"`
+	ConvStore *ConvStoreDetail `json:"cstore,omitempty"`
 
-    Items *[]ItemDetail `json:"item_details,omitempty"`
-    CustField1 string `json:"custom_field1,omitempty"`
-    CustField2 string `json:"custom_field2,omitempty"`
-    CustField3 string `json:"custom_field3,omitempty"`
+	Items      *[]ItemDetail `json:"item_details,omitempty"`
+	CustField1 string        `json:"custom_field1,omitempty"`
+	CustField2 string        `json:"custom_field2,omitempty"`
+	CustField3 string        `json:"custom_field3,omitempty"`
 }
 
 type SnapReq struct {
-    TransactionDetails TransactionDetails `json:"transaction_details"`
-    EnabledPayments []PaymentType `json:"enabled_payments"`
-    Items *[]ItemDetail `json:"item_details,omitempty"`
-    CustomerDetail *CustDetail `json:"customer_details,omitempty"`
+	TransactionDetails TransactionDetails `json:"transaction_details"`
+	EnabledPayments    []PaymentType      `json:"enabled_payments"`
+	Items              *[]ItemDetail      `json:"item_details,omitempty"`
+	CustomerDetail     *CustDetail        `json:"customer_details,omitempty"`
 }
 
 type CaptureReq struct {
-    TransactionID string `json:"transaction_id"`
-    GrossAmt float64 `json:"gross_amount"`
-}
\ No newline at end of file
+	TransactionID string  `json:"transaction_id"`
+	GrossAmt      float64 `json:"gross_amount"`
+}