Port Forward to ftp on mikrotik through public ip using ASA

Hi,

i just want to test my port forwarding rule on the ASA, so i enabled the service ftp on the mikrotik with port 21, now to port forward to this ftp through public ip, i did this configuration on ASA:

object network ftpmikrotik

host 5.5.5.1

nat (FwInside,FwoutTerra) static 1.1.1.2 service tcp ftp ftp

access-list OUTSIDE_IN permit tcp any host 5.5.5.1 eq 21

access-group OUTSIDE_IN in interface FwoutTerra

when i write ftp://1.1.1.2 on the internet, i get nothing. While the ftp is working locally, when i type ftp://5.5.5.1

is there anything wrong with my nat configuration?

thanks in advance!