Adding multiple attachments to a form submission before submitting it

I’d like to allow users to add multiple attachments to a form submission. In the form, they click the attachment button (the repeating group off to the left will display the pictures uploaded after they attach them):

The attachment button (above) creates a dropdown as shown here:

After the user clicks the “attach” button above, my app enters these images in a Thing called “Attachments”, but has no way of associating the Attachments with the form submission (the form will create an entry in a “Location” Thing) until they click this submit button to create a Location entry:

My question is: how can I attach multiple pictures to a form submission before submitting it (i.e. before creating a Thing entry to which the attachments can be associated)?

You could create a field on the user to store the uploaded images, then remove them after the attachment is created. It’s basically a holding area that is only populated while editing the attachment entry.

That did the trick, thank you @potentialthings. I set it up so that it deletes the field on the user if they click the “x” and also when the reload the form (assuming they did not click the x and clicked outside of the popup ) so that any rougue attachments are deleted when the form is loaded.

Quick question on deleting the scratch. Bubble is giving me an error “To delete should be anything saveable but right now it is a file.”

Does deleting a thing not apply to file uploads?

did this work out?