Cannot access FTP even though enabled using IIS

This should be pretty quick to answer, however I’m not sure how to do it myself so I thought I would ask. I have everything else working such as http, remote access, etc. FTP does work via IIS.

External IP: 72.242.xxx.xxx
Internal IP needing FTP access: 192.168.1.6

FTP does technically work, however it just goes to the FTP of the RouterOS, and from what I understand it is designed to be this way. However, there has to be a way for me to NAT an FTP from the outside world to the inside world, right?

Thanks.

FTP uses port 21 and port 20 maybe this helps
also check /ip services to see what ports RouterOS use for these services.