Hi @leotreasure - for using List of Numbers, check out this example from @NigelG’s Building on Bubble site. His example should have enough info to help you create your pic uploader.
https://buildingonbubble.com/block/create-x-things-1508306175092x250559076540612600
Question: You wrote above “I’m trying to upload a bank of images that all users will be able to choose from.” Do you want to directly upload files to the database? If so, then this example may be useful (also on Building on Bubble site) as well as this discussion thread on bulk uploading. Might take a little experimenting to achieve what you’re looking for.
https://buildingonbubble.com/block/bulk-image-upload-1469001438552x416813573154013200