Maximum Quantity Of Declinaison

[lescrocs]

Hello community.

I have a little problem Development ...

I would like to know if there is already a way to limit the maximum amount of a declination.

In my case, I have a variation on the manufacturing time (express or standard). But from a certain amount (in decreasing prices), the express is no longer possible for reasons of manufacturing time ...

So I would like if anyone has had this case configuration? and what means implement.

Otherwise I thought to use the minimum amount and reversed so that it becomes a maximum amount for the declination.

Someone once work on this part? or have an idea of setting this up?

I'm PrestaShop 1.6.1.2

thank you