Port forwarding to green host

[Guest]

[X_Ch4n]

Hi all,
i setup my first endian machine. I have some public ips (12.34.56.78, 12.34.56.79, 12.34.56.80, 12.34.56.81 ecc..). all ips are associated with endian's red interface.
Now i would like to port forward 12.34.56.78:80 to an internal host on green zone 192.168.0.10:80.

Under Firewall -> port forwarding/NAT i created a new rule: Incoming IP= Uplink main (12.34.56.78), Incoming Port=80, Translate to ip= 192.168.0.10, port= 80.

With this setup i can't connect to my host at port 80 from an external connection. I can't see anything in logs.

What am i wronging?

Please help