[CutX]

that "{" above your public should be under it.

and also, its: OnPlayerShootPlayer(Shooter,Target,Float:HealthLos t,Float:ArmourLost)
not OnPlayerShootPlayer(shooter,target,Float:damage)

PHP код:

public OnPlayerShootPlayer(Shooter,Target,Float:HealthLost,Float:ArmourLost)
{
    new Float:H[2];//u dont need that, you can use HealthLost and ArmorLost
    GetPlayerHealth(target, H[0]);
    GetPlayerArmour(target,H[1]);
    if(GetPlayerWeapon(shooter) == 34)
    {
        if(H[1] > 0) return SetPlayerArmour(target,0);
        SetPlayerHealth(target, H[0]-100);
    }
    return 1;
}