Receipt display "Change Cash" when do tender by using Voucher

Hi everyone,

How to avoid system showing "Change Cash" when user do tender by using Voucher?

For example:

Voucher = $100

Item = $49

So, in receipt it will show "Change Cash: $51"

I don't want receipt to display "Change Cash" because user cannot return Cash when Voucher value is higher than item price. Plus, it will effect on value display in X report and Z report. Kindly advise.

Regards,

Ayuni