Hello everyone,

I am using the edit orders mod and it is working fine but I would like to add a field where I can enter a percentage for a discount. For exemple under the sub-total I would like a field called Discount where i can put 20 for exemple and when I update, my total is the price with 20%off.

I know how to code in PHP but I am a bit confused with the code and I can't figure out how to do it.

Thank you so much,
Have a greaat day,

F.