Variable Data Export Problem - File Name Override

[#1]

 I am using varial data to merge student names into a Zoom virtual background image document (.jpg) and no matter what I do it overrides the export file every time instead of naming each one separately with a different number. I did a test with 4 names and I end up with 1 exported file. I have done this 3 times now. I have the excel saved as a .CSV, I have clicked through all the data sets, recorded the action correctly, checked the box for "Override Export Command" and it still won't work! Help!

[#2]

 I am using varial data to merge student names into a Zoom virtual background image document (.jpg) and no matter what I do it overrides the export file every time instead of naming each one separately with a different number. I did a test with 4 names and I end up with 1 exported file. I have done this 3 times now. I have the excel saved as a .CSV, I have clicked through all the data sets, recorded the action correctly, checked the box for "Override Export Command" and it still won't work! Help!