How can I separate tinyDB storage in screen1 and screen2?

Hi, I'm doing project in highschool. The project is the teacher observation app. This is middle process of app which teachers can create a list of classes in the listview by entering the class themselves for grading students. If teachers click text in the listview, they must go to the list of students who are screen two. The students who go into each class may be different. However, the problem is that even if they go to screen 2, the list on screen 1 is displayed on screen 2. How can I solve this problem?
Teacher_Observation (1).aia (8.1 KB)

You use the same tag (blank!) in both screens, and the same NameSpace (TinyDB1).

That redults in you accessing the same data.

Use different tags ('ClassList' and 'StudentList').

I got it! I'll try it. Thank you.