Update: It worked

Hi, I am trying to have it that i can shoot a RPG or Sniper form the passenger seat from a helicopter. I know it is in possible in online but I wondered why not in single player?

I have looking in Weapons.Meta and i think i found the answer why:
In the Weaponsflag section there is a flag called "DrivebyMPonly" for both the RPG and the Sniper (and propably some other weapons I dont know off).

I think if i just add Driveby as a flag it would work, but does anyone else have any knowledge of it?

When i try to change the prices of the DLC weapons (Heavy pistol, Special Carbine etc.) i can not get it to work. Im only changing the price value's of the weapons (Shop_weapons.META in MODS Folder). The game loads fine, but the prices are still default. Am i missing something?

I just cant seem to get a modded ammunation. If i try to install a mod where i can buy Molotov and bats on the ammunation shelfs it just doesnt work. My game will load but the ammunation is the same as always. Even editing existing meta files to make the gun prices (for heavy pistol etc.) more realistic does not work... Anything i seem to miss while modding in OPENIV?

We have fantastic mods to store planes en other types of transportation, but i would like to see a boat storage added with the addition of the 2 new weaponized boats we gotten.

I search everywhere and even tried it myself. I got to the point where i got the model loaded in the game but the model wasnt placed correctly (Sideways and a meter from his head) because it is a mask slot. I think i would pay 5 dollars to see a mod that fixes this.