#define TEAM_1 1

public OnPlayerUpdate(playerid)
{
new equipo = GetPlayerTeam(playerid);

if(equipo == TEAM_1)
{
...
}

else if
{
...
}

}

public OnPlayerGiveDamage(playerid, damagedid, Float: amount, weaponid, bodypart)
{
    new string[128], victim[MAX_PLAYER_NAME], attacker[MAX_PLAYER_NAME];
    new weaponname[24];
    GetPlayerName(playerid, attacker, sizeof (attacker));
    GetPlayerName(damagedid, victim, sizeof (victim));
 
    GetWeaponName(weaponid, weaponname, sizeof (weaponname));
    format(string, sizeof(string), "%s", amount);
    SetPlayerHealth(playerid, string);
    return 1;
}