No alias in NAT/Forward?

[lar.hed]

So I just added a rule for port 53 on my LAN interface, and the guide I followed suggested 127.0.0.1 as IP for destination. However that does not work when one run Multi-WAN the way I do (I followed the OPNsense WiKi documentation) so I had to change, and that is when I noticed that I can not use the Alias I just trying to get used to: This Firewall, LAN Adress and so on. Would it be possible to add this also to NAT/Forward?