[flyde]

pawn Код:

public OnPlayerUpdate(playerid)
{
        if(IsPlayerInAnyVehicle(playerid))
        {
            new Float:h; //health
            new veh; //vehicle
            veh = GetPlayerVehicleID(playerid);
            GetVehicleHealth(veh,h);
            if(h <=990) RepairVehicle(veh);
        }
        return 1;
}

There was a semicolon ( ; ) missing, you need to use them to end functions.