diff --git a/models/sale_order.py b/models/sale_order.py
index 9958cdb..408e2fd 100644
--- a/models/sale_order.py
+++ b/models/sale_order.py
@@ -13,6 +13,12 @@ class SaleOrder(models.Model):
             lambda t: not t.pack_parent_line_id.exists(),
         )
 
+    @api.multi
+    def action_invoice_create(self, grouped=False, final=False):
+        print("----- TEST ------")
+        return super(SaleOrder, self).action_invoice_create(
+            grouped, final)
+
 
 class SaleOrderLine(models.Model):
     _inherit = "sale.order.line"
@@ -22,13 +28,13 @@ class SaleOrderLine(models.Model):
         invoice_lines = self.env['account.invoice.line']
         for line in self:
             # Check if line has a pack_parent_line_id
-            print("self.pack_parent_line_id.exists()", str(self.pack_parent_line_id.exists()))
+            print("---- self.pack_parent_line_id.exists() -----", str(self.pack_parent_line_id.exists()))
             if self.pack_parent_line_id.exists():
                 # Get the ref of parent pack
                 sale_id_ref = self.env['sale.order.line'].search([('id', '=', self.pack_parent_line_id.id)])
-                print("sale_id_ref", str(sale_id_ref))
-                print("sale_id_ref.product_id.product_tmpl_id.pack_type", str(sale_id_ref.product_id.product_tmpl_id.pack_type))
-                print("sale_id_ref.product_id.product_tmpl_id.pack_component_price", str(sale_id_ref.product_id.product_tmpl_id.pack_component_price))
+                print("--- sale_id_ref ---", str(sale_id_ref))
+                print("--- sale_id_ref.product_id.product_tmpl_id.pack_type ---", str(sale_id_ref.product_id.product_tmpl_id.pack_type))
+                print("--- sale_id_ref.product_id.product_tmpl_id.pack_component_price ---", str(sale_id_ref.product_id.product_tmpl_id.pack_component_price))
                 # Check if product is Pack detailed and option Totalized
                 if sale_id_ref.product_id.product_tmpl_id.pack_type == 'detailed' and sale_id_ref.product_id.product_tmpl_id.pack_component_price == 'totalized':
                     return invoice_lines