Plan Addons and Dynamic Modifiers

Hello,

For each plan, I have defined a Dynamic Modifiers. So the user can choose between two variant prices (a monthly price and an annual price).

If I create an Addons Plan, and in Addon Behavior I select "Applicable for each recurrence".
How often will the user pay for the Addon Plan ?

Because the price of the Addons Plan should not be the same depending on whether it is paid monthly or annually.

Thank you,
Philippe