How do I implement zUFLAK in the game
 

I want to put a few Flak-U-Boats "zUFLAK" in the harbour of Brest. I can see the boats in the Mission Editor 2. But even when I start in "The black pit" a new carrier I don´t see this boats in the game.
When I look in "SH5/data/Land" I see bunker and turrets but no Anti aircraft guns(In german:Flak). It would be nice if this Flak guns could be created from somebody who knowes how to do.

I did put a few U-Flak boats in the harbour of Brest. But I am shure they won´t fire when British bombers attack the Brest harbour because the community don´t have the source code of SH. The game Wolfpack before "Marulken"has the source code of the Marulken game. What a wonderful game SH. could be with this source code. But those boys want to have their real U-boat life. But they are born too late.

If you set them up as ships instead of subs they should fire. They won't dive, but with docked boats that's not an issue anyway.

I just want to clarify what I ment. Everybody can have his dreams and realize them. For me it`s only a pity that this dreams are a mostly multiplayer game.

Thanks for the answer kapuhy, I tried this:
Basen_FRA.mis: Name=_FLAK U-Boat#1
Class=UFLAKx
Type=110

data/Sea: Name=zUFLAK
Class Name=UFLAKx
Unit Type=110

data/Roster/German/Sea= Name=zUFLAK
Class Name=UFLAKx
Unit Type=110

But when I check in Mission Editor 2 I get the message:
Data reference missing in mission layer Basen_FRA Class Roster for Unit_FLak U-Boat#1was not found in the Roster.

With Unit Type=203 and Origin=German it works. But the boats don`t shoot in the game.
Is there a solution?