Class eCart Repeat Region

Good Morning,
how are you?

1. How do I put an outside(the array is created outside the class) array inside a Class?
I create the array but it doesn't read or display it when I want to print it out through a method in a Class.

Because what I want to do is that the products have different pickup addresses and the delivery address is only one address so I'm using the
ecart repeat region to get that information and then create a array and then work out the one or more quotes depending on the amount of pickup
addresses for the ecart transaction. I'm using my own integrated Courier Service.

2. Where do I change the SESSION value for the eCart session the way I want it to be?

Thank you for your help.