Reward points undefined

Hi

On the checkout when using reward points (500 available) on the following condition:
Use my reward points, {0} of {1} reward points ({2}) available for this order.

the following is displayed:
Use my reward points, 500 of undefined reward points (undefined) available for this order

Why is the value being returned as 'undefined'?

Thanks in advance

you have not mention your nopCommerce  version & Steps to reproduce the problem. please read this post guideline: https://www.nopcommerce.com/en/boards/topic/7568/how-to-report-a-bug