Same Product, Different Prices + Discount

[Bleu de Cocagne]

Hi,

 

Context:

 

- I have a single product, a scarf REF.100.54, which has 2 different sizes: S and L

 

- Size S is 75.00€ (tax inc.) / Size L is 89.00€ (tax inc.)

 

- I want to give to both sizes a 30% discount 

 

Problem:

 

- When editing the Combinations, and the price impact, the price showing is CORRECT, however, the "original" price (that shows crossed), does not change and always show 75.00€, when it should show 75€ for size S, and 89€ for size L.

 

 

(Please check attached)

 

 

Why is it?

Can i make it work, or should i create 2 different products, one for size S and other for size L?

 

Thank you in advance!