[Marricio]

You need to store the NPC ID returned by FCNPC_Create in order to be able to make changes to that NPC later on.

pawn Код:

forward CreateZombies(count); 
public CreateZombies(count) 
{     
    new str[24]; 
    new Random = random(sizeof(ZombieSpawns)); 
    format(str,sizeof(str),"Zombie[%d]",MAX_PLAYERS-(count)); 
    new npc =  FCNPC_Create(str); // See 
    FCNPC_Spawn(npc,DayZ_Z_RandSkinZombie[random(sizeof(DayZ_Z_RandSkinZombie))],ZombieSpawns[Random][0],ZombieSpawns[Random][1],ZombieSpawns[Random][2]+0.7); 
    FCNPC_SetAngle(npc,ZombieSpawns[Random][3]); 
    ZombiesAlive ++; 
    ZombieTimer[npc] = repeat ZombieMove(npc); 
    SetPlayerColor(npc,0xFF0000FF); 
    IsAZombie[npc] = 1;

    if( count < MAX_ZOMBIES ) SetTimerEx("CreateZombies", 500, false, "i", count + 1); // The trick is here!
    return 1; 
}

If the problem is still there, I suggest you to check the FCNPC official thread for further help.