Hi, I need some help understanding the “App fee” option in the stripe plug in by Bubble.

This is what is says in the docs. “You can charge a fee on transactions, but it must a currency amount and not a percentage.You can, however, compute the value in the field using the Composer.”
I’m creating a marketplace so I want to the app fee to be 5% of the total charged price.
How could I solve this using this plug in and not the Stripe Marketplace express by zerocode (I had an issue with that plug in)
Thanks ![]()