Anti virus problem

My greetings.............After solving the problem of the many bombs, the problem of anti virus appeared and it happened to me. I got the first zm and bought 2 bombs and I threw one at 6 people in one place, but they all came back using anti virus and I also threw the second bomb on them and they all came back using anti virus. The zombies can hardly kill the players.  ......... I suggest that you can buy a zombie bomb if there are more humans than zombies in the map, and an anti virus can be used if there are more zombies than humans in the map

That anti is now inserted, if there are fewer zombies and more anti people will not be able to buy and it is not a bug but they are buying anti because it was then limited to 30 antis per round, now it is limited to 12