Seletors_Get and Sort Data

Hello I am quite frustrated that I don’t quite understand the steps of making ‘idx’ disapear in selectors …What is the purpose of it? How we can do it when it comes to different scenarios? :thinking: Would be really grateful if anyone can help to tackle this problem!
There’s a problem appeared in the workflow, I have attached the robot and the screenshot as below. :slight_smile:
:blush: :blush:wPractice.xaml (20.1 KB)

Please check attach filePractice.xaml (21.2 KB)