Populate title with the filename of an image when uploading

I am creating galleries of images for customers to choose from when ordering postcards

Customers need to see a unique number for each image - filename is fine as it relates to the file on my computer

However the filename doesnt populate TITLE any more

If I use animated grid the title field is populated but its not big enough for 600 images
I can add a new image to an existing gallery and it works then it doesnt

Does anyone know how this can be achieved?
this is driving me crazy

thank you

Hey @Michael_Whitefoot!

Are you able to provide more details as to what’s happening? Is this part of a custom form, Wix Stores or something else? Do you have any code?