NAT rule dstnat Dst. Port disabled

Hi
Im trying to create port forward on my router
CAS125-24G-1S-RM RouterOS v6.38.1 Router mode, PPPoE internet access
MT.png
When I try to create dstnat rule, destination port field is disabled. I have created rules through terminal, and they are working (data is going through), but when I try to modify the rule, destination port field is still disabled, but there is a number in the field, the one I have inputed through terminal…

I’m I doing something wrong?

tnx

Upgrade WinBox to 3.9.

Thank you for the fast response :slight_smile:
Sometimes, a man should sleep on the problem before asking stupid questions. Winbox upg is the first thing that came to mind this morning :slight_smile: