Cbsubs: Adapt plan price conditionnaly using "reverse" Promotions

hello

I was wondering if eventually it would not be possible to do something with Cbsubs Promotions for conditionally increase plan price instead to decrease. Actually with this tool, it seem only possible to subtract something but not to add. Except if settings called "A fixed amount subtracted/added from the item price plus a percentage" could be used...but I don't understand how I'm supposed to set this for "add" a fixed amount. Of course if we talking about "Promotions" this is supposed to be something who will cost LESS and not MORE.

In fact in my case, I would like propose some kind of paid "options" but without need to create dozen/hundreds related plans for that. For example, I would like use only 2 Plan with their own base price (Monthly $100 + Yearly $1000). Then I would like create a custom single select CB field with option such:

Option 1 + 100$
Option 2 + 180$
Option 3 + 240$
and more...

Finally I would like setup 3 "promotions" who can add permanently these amount instead to subtract by looking to value of my CB field.


This logic is possible already or not ?

thank

You can increase the price using promotions. You do this by setting a negative promotion. For example if the promotion amount is -100 you'll be adding $100 to the price. If you use a field for this you can do -[cb_field] or ensure your fields value is already stored with a negative value.