How students can reply to feedback ?

Hey moodlers,

Hope everyone is doing good

My students submit image files as assignments. Here is my grade process :

1. I download the file
2. I correct it with my software
3. I attribute a note to the student
4. I write some comments feedback
5. I uplaod the file as feedback also

Here is my question : how can my students reply to my feedback ? AND i want to be notified about it to answer back again.

Many thanks for your help guys

PS : i know that i can use the comments widget on the assignment page, but im not notified about answers :