Coupon: minimum price doesn’t work

Hi.
I’m Fanko.

I’ve installed Rich Store Lite template and i’ve configured woocommerce plugin.

I have a problem during the creation of discount coupon.

This coupon has the 10% discount on global price of the cart; i want to be able to use it only if the cart start from a minimum price (example 100,00).

When i buy some products (total amoount example 250,00) and i try to apply the discount, the system tells me that “i cannot use the coupon cause i have not exceeded the minimum price of 100,00).

I have already canceled and recreated the coupon: it works only if i delete the “minimum price” condition.

Any helps?

Thanks for collaboration.