add cancel oxxo payment

@@ -192,7 +192,7 @@ module ActsAsChargeable
     def cancel_oxxo_payment
       return { error_message: 'Already paid' } if var_payed?
       return { error_message: 'Not charged yet' } unless var_service
-      return { error_message: 'Not charged with oxxo' } unless barcode
+      return { error_message: 'Not charged with oxxo' } unless var_barcode
       charge = find_charge
       if charge.status == 'paid'
         update_columns(var_status: 'paid',

 # Var Version
 module Var
-  VERSION = '0.2.16'
+  VERSION = '0.2.17'
 end