Hi @Erikbeeren,
Without looking at your gh file for loop’s supply side, my guess is you only build one instance of supply side and use it 10 times, which is causing the issue that it only appears in the last loop.
You can right click the components to add the “Duplicate Number input” for generating 10 different instance for 10 different loops.
Ironbug_Duplicate component also works the same.
Does this help?
Mingbo