Scales in rebates

Hi

I m trying to use the scale in the rebate, but il doesn't work. The system didn't pick up in my invoice the scale of my rebate

I have already checked the issue in the forum, but I didnt find my answer.

I would like to use the scale in two cases of rebate , the first in value, et then in quantity.

For example :

from 1000 eur 5%

         2000 eur 6ù

And in quantity :

from 1000 M² 5%

        2000 m² 6%

Anybody could help me?

Thanks a lot

Regards

Kari