Prompt for over write on subsequent file upload

My users want to be prompted if they are uploading a file and there is already a previous file uploaded.

I looked at using Field rules and Formulas to show some text on the screen but to no avail, ideally I would prefer a pup, but if I can change/add a label or even a read only column that would work too

Hello Ken,


If you are trying to show a poup then i think this only be possible using jQuery. but if you are okay with displaying some value 

then i think in you need to cretae a field and update it when fiel is uploaded . Like below


and Show this value when anyone editing this page .



Sunny Singla