Usecase:
Guest Harbour with RV parking.
Two QR signs.
The possibility to pay for either boat or RV.
…Without having to select boat or RV: The QR sign should default to one.
The usual way would be to make two sets of payment functions, one for boats and one for RVs.
But the advantage of being lazy is to figure our shortcuts 
Solution:
Two identical objects using the same function block.
A variable added to the objects that selects Boat or RV (Dropdown).
In the payment function, use the variable as the default.
Connect each QR sign to each object.
