Fix wrong implementation of sequences

configuration.py

@@ -2,7 +2,7 @@
 # this repository contains the full copyright notices and license terms.
 from trytond.model import fields
 from trytond.pool import PoolMeta
-from trytond.pyson import Id
+from trytond.pyson import Id, Eval
 
 __all__ = ['Configuration']
 
@@ -15,5 +15,5 @@ class Configuration:
     unit_load_sequence = fields.Property(
         fields.Many2One('ir.sequence', 'Load unit Sequence', required=True,
                         domain=[('code', '=', 'stock.unit_load'),
-                                ('name', '=', 'Unit load')])
-    )
+                                ('company', 'in',
+                                 [Eval('context', {}).get('company', -1), None])]))