Essaye une dernière fois comme ca :
//ANTI VDM
_getMsgSended = player getVariable "msgSended";
if (isNil "_getMsgSended") then {
player setVariable ["msgSended", 0];
};
if (((vehicle _source isKindOf "Ship") OR (vehicle _source isKindOf "LandVehicle")) AND (_projectile == "")) then
{...