send most recently created file ssis ftp task

I am trying to automate an ftp send with ssis. I can create the file, drop it in a folder on my server but how do I set up the ftp task to send that file via ftp? when the project creates the file, it names is with today's date in the name ex. tosend20180904.txt. How can I instruct the ftp task to send the most recently created file in the file transfer configuration?

Thanks