Checkboxes in Data Viewer Grid are not working properly

I made a layout for DVG with a picture and a checkbox. When a user click an item only the clicked item’s checkbox has to turn on. But when I clicked one, all are turning on and turning off at once. How can I solve this?

Hello @dhanushan48608nkfw!
Custom Data Viewers are best for viewing data (not inputs like text inputs, checkboxes).
We suggest you use a clone component instead of DVL
Here is an example app: Thunkable