We´re trying to find a solution where we can add a new rule to coupon codes saying that the coupon code can only be used by one or more specific Customer IDs. Reason for this is that we want to make unique rebate alternatives for specific customers that extends past our standard cataloge price rules. Mainly unique agreements and prices on specific products for a given customer. However, as the coupon code is based on attributes we´re struggeling to find a good solution for this. Anyone have tips/tricks?