Port 80 NAT, Mikrotik RouterOS DNS

I have this VPN address which nicely works as public DNS.
If my IP address changes the DNS will catch it and stick to the new one.

Basically the public DNS of Mikrotik router looks like this:

xxxxxxxxxxxx.sn.mynetname.net

I am testing Wordpress future and now I am hosting on internal address 192.168.99.62
How do I make so the page can be assigned from outside world via this DNS?

Go to IP -> Firewall -> NAT. Click [New]

Fill the general settings:

Scroll down to actions:

Write comment at the very bottom:

Scroll to the top and hit [OK]

The result:

Appendix:
There is nothing special on firewall rules section. So everything should work out of the box :)