Port Forwarding ...

I have tried to setup a new router RB2011UAS-IN, but is not able to get the port forwarding to work

My goal :
Incoming tcp - "call" on port 22222 should be transfered to my internal webserver on adress a.b.c.d port :80

I've tried to read the manual and created NAT RULES as follows using WinBox:
General
Chain : dstnat
protocol : 6(tcp)
dst.port : 22222
in.interface : all ethernet
Action
action : dst-nat
To-addresses: a.b.c.d
to Ports : 80

I see on the counter thats i receive calls, but don't get any answer on the calling side,

For me it seems that somethings is missing, but I dont see what ...

Rgds
GĂ–ran

Post /export compact so everyone can see your rules.