that one which Ettan give dont worked, but i little remake that:
public AntiCheat(playerid)
{
    for(new i = 0; i < 50; i++)
    {
        if(IsPlayerConnected(i))
	{
	    new Float:hp,
		Float:armour;
		GetPlayerHealth(i,hp);
		GetPlayerArmour(i,armour);
		
	    if(hp > 75)
	    {
           // Do Stuff
	    }
	    else if(armour > 75)
	    {
// Do Stuff
	    }
        }
    }
    return 1;
}