diff --git a/src/Facturacom33.php b/src/Facturacom33.php
index 7dc42b8..e4c9ee4 100644
--- a/src/Facturacom33.php
+++ b/src/Facturacom33.php
@@ -9,8 +9,14 @@
 namespace inquid\facturacom;
 
 
+use inquid\facturacom\models\Cliente;
+use inquid\facturacom\models\EmpresaFacturadora;
+use inquid\facturacom\models\Factura;
 use inquid\facturacom\models\Factura33;
 use inquid\facturacom\models\Error;
+use inquid\facturacom\models\Serie;
+use yii\base\Model;
+use yii\db\ActiveRecord;
 
 class Facturacom33 extends HttpClientV3
 {
@@ -144,21 +150,20 @@ public function getSeries()
     }
 
     /**
-     * @param Factura33
+     * @param Factura33 $factura
      * @return boolean|Error
      */
     public function createFactura33($factura)
     {
-        $model = new Factura33();
-        $model->setAttributes($factura->getAttributes());
+        $this->API_VERSION = 'api/v3';
         if ($factura->validate()) {
             try {
-                return $this->booleanResponse($this->sendRequest('post', 'cfdi33/create', $model->getAttributes()));
+                return $this->booleanResponse($this->sendRequest('post', 'cfdi33/create', $factura->getAttributes()));
             } catch (\Exception $exception) {
                 return new Error(500, $exception->getMessage());
             }
         }
-        return new Error(500, $model->getErrors());
+        return new Error(500, $factura->getErrors());
     }
 
     /**
diff --git a/src/models/Conceptos.php b/src/models/Conceptos.php
index a4126a2..2fb74ef 100644
--- a/src/models/Conceptos.php
+++ b/src/models/Conceptos.php
@@ -44,7 +44,7 @@ class Conceptos extends Model
     /**
      * @var float
      */
-    public $ValroUnitario;
+    public $ValorUnitario;
     /**
      * @var float
      */
diff --git a/src/models/Factura33.php b/src/models/Factura33.php
index 9a99b76..cf797bb 100644
--- a/src/models/Factura33.php
+++ b/src/models/Factura33.php
@@ -23,9 +23,9 @@ class Factura33 extends Model
      */
     public $TipoCfdi;
     /**
-     * @var string $NumOrden
+     * @var string $NumOrder
      */
-    public $NumOrden;
+    public $NumOrder;
     /**
      * @var string $Comentarios
      */
@@ -119,9 +119,9 @@ class Factura33 extends Model
      */
     public $MetodoPago;
     /**
-     * @var integer $LugarExpeicion
+     * @var integer $LugarExpedicion
      */
-    public $LugarExpeicion;
+    public $LugarExpedicion;
     /**
      * @var string $Confirmacion
      */
@@ -143,9 +143,9 @@ class Factura33 extends Model
         "RegimenFiscal" => ""
     ];
     /**
-     * @var array $Recpetor
+     * @var array $Receptor
      */
-    public $Recpetor = [
+    public $Receptor = [
         "ResidenciaFiscal" => "",
         "UID" => ""
     ];