diff --git a/iris.go b/iris.go
index c2415f1..bbd5ded 100644
--- a/iris.go
+++ b/iris.go
@@ -13,13 +13,13 @@ type IrisGateway struct {
 }
 
 // Call : base method to call Core API
-func (gateway *IrisGateway) Call(method, path string, body io.Reader, v interface{}) error {
+func (gateway *IrisGateway) Call(method, path string, body io.Reader, v interface{}, key string) error {
 	if !strings.HasPrefix(path, "/") {
 		path = "/" + path
 	}
 
 	path = gateway.Client.APIEnvType.IrisURL() + path
-	req, err := gateway.Client.NewRequest(method, path, body, gateway.Client.ApproverKey)
+	req, err := gateway.Client.NewRequest(method, path, body, key)
 	if err != nil {
 		return err
 	}
@@ -32,7 +32,7 @@ func (gateway *IrisGateway) CreateBeneficiaries(req *BeneficiariesReq) (map[stri
 	var resp map[string]interface{}
 	jsonReq, _ := json.Marshal(req)
 
-	err := gateway.Call("POST", "api/v1/beneficiaries", bytes.NewBuffer(jsonReq), &resp)
+	err := gateway.Call("POST", "api/v1/beneficiaries", bytes.NewBuffer(jsonReq), &resp, gateway.Client.ApproverKey)
 	if err != nil {
 		gateway.Client.Logger.Println("Error create beneficiaries: ", err)
 		return resp, err
@@ -45,7 +45,7 @@ func (gateway *IrisGateway) CreateBeneficiaries(req *BeneficiariesReq) (map[stri
 func (gateway *IrisGateway) ValidateBankAccount(bankName string, account string) (map[string]interface{}, error) {
 	var resp map[string]interface{}
 
-	err := gateway.Call("GET", "api/v1/account_validation?bank="+bankName+"&account="+account, nil, &resp)
+	err := gateway.Call("GET", "api/v1/account_validation?bank="+bankName+"&account="+account, nil, &resp, gateway.Client.ApproverKey)
 	if err != nil {
 		gateway.Client.Logger.Println("Error approving: ", err)
 		return resp, err
@@ -60,7 +60,7 @@ func (gateway *IrisGateway) CreatePayouts(req *PayoutReq) (Payout, error) {
 
 	jsonReq, _ := json.Marshal(req)
 
-	err := gateway.Call("POST", "api/v1/payouts", bytes.NewBuffer(jsonReq), &resp)
+	err := gateway.Call("POST", "api/v1/payouts", bytes.NewBuffer(jsonReq), &resp, gateway.Client.CreatorKey)
 	if err != nil {
 		gateway.Client.Logger.Println("Error create payouts: ", err)
 		return resp, err