Working with Folder Triggers

So I'm trying to create a macro that will automatically open wetransfer on google chrome and upload the files. I have everything pretty much figured out except for the part where If I drag in multiple files, it will open a new chrome tab for each file and it will break the script. I currently have it so that the script triggers when I add the file to a specific folder. Just wondering if there is a way I can just trigger with the folder where it will just recognize that there has been an update to the folder, rather than recognizing each new update.

Hi, can you share what you got so far