How can I set iMessages to auto accept incoming file transfers?

I used to be able to set iChat to auto accept file transfers by activating Auto Accept.Applescript. But, ever since it became iMessages, that script doesn't work anymore. The script is still there, it just doesn't work. 😕 Anyone have any clue what I can do to solve this problem? It is something that has been vexing me ever since the change and I finally decided to post the question to the community in hopes that someone has already solved this problem long ago. I'm on a 15'" Macbook Pro mid 2012, running on El Capitan 10.11.3. Any suggestions would be greatly appreciated. 🙂 I'm pretty sure this can be easily resolved, I'm just not too computer savvy and have searched the web for a resolution, but no luck unfortunately. 😟