Setup Discount Coupons/Barcodes

Good day.

i am hoping that somebody could perhaps help me regarding this.

i am trying to setup barcodes and discounts for AX retail POS. i am trying to follow the following article but there are some inconsistencies that i am experiencing.

Article:
https://blogs.msdn.microsoft.com/axsupport/2013/01/25/ax-2012-r2-for-retail-setting-up-discount-coupons-with-bar-codes-for-scanning-into-pos/

on step 3 e. it states that the barcode will be automatically generated, but it does not generate the barcode for me. what am i missing?

Any help with be appreciated.