Finishing AS400 Terminal Robot

Ok i have 3 days to finish my project. No pressure!
It’s almost there i still need to figure out how to switch customer number from excel sheet “Blad2” when all customer orders from “Sheet1” are inputted to AS400 terminal. Thing is when i gotta change, i have to go back one screen in terminal > input new customer nr and continue.
Any help/tips are appreciated. If there’s time we gotta improve error handling too with try-catch. Attached are my XAML- file and excel.

MikkoFormatDatatable.xaml (47.7 KB)TestExcel.xlsx (31.9 KB)