Thanks for your reactivity.
We want to give the choice to select a number of maintenance year for a subscription plan. We can create many child plan but it's not user friendly, to have a select input with the number of years and the price automatically updated are very pratical.
For exemple :
Template Subscription Plan :
option Maintenance : select (option : 1 year, 2 years, 3 years). Is it possible to really limit only maintenance subscription with select option (and to keep a other limit time to parent subscription) ?