diff --git a/models/account_payment.py b/models/account_payment.py
index e227119..6e1ed26 100644
--- a/models/account_payment.py
+++ b/models/account_payment.py
@@ -42,7 +42,7 @@ class AccountPayment(models.Model):
         # Triple Jumper: If we have the bypass flag, we jump over the hr_expense method.
         # This works in tandem with our Model-level jumpers in account_move and account_move_line.
         hr_expense_class = self._get_hr_expense_base_class()
-        if self._context.get('skip_expense_lock') and hr_expense_class:
+        if self.env.context.get('skip_expense_lock') and hr_expense_class:
             super(hr_expense_class, self)._synchronize_to_moves(changed_fields)
         else:
             super()._synchronize_to_moves(changed_fields)
@@ -56,7 +56,7 @@ class AccountPayment(models.Model):
     def _synchronize_from_moves(self, changed_fields):
         # 1. Standard sync with jumper support
         hr_expense_class = self._get_hr_expense_base_class()
-        if self._context.get('skip_expense_lock') and hr_expense_class:
+        if self.env.context.get('skip_expense_lock') and hr_expense_class:
             super(hr_expense_class, self)._synchronize_from_moves(changed_fields)
         else:
             super()._synchronize_from_moves(changed_fields)
@@ -88,7 +88,7 @@ class AccountPayment(models.Model):
         # Propagate bypass flag during writes to avoid locked checks
         hr_expense_class = self._get_hr_expense_base_class()
         if hr_expense_class:
-            if self._context.get('skip_expense_lock') or any(p.expense_ids and p.state == 'draft' for p in self):
+            if self.env.context.get('skip_expense_lock') or any(p.expense_ids and p.state == 'draft' for p in self):
                 return super(hr_expense_class, self.with_context(skip_expense_lock=True)).write(vals)
 
         return super().write(vals)