[Denying]

pawn Код:

new faction = 0, online[128];

if(strcmp("/mon", cmdtext, true) == 0)
{
    if(PlayerInfo[playerid][playerteam]<1 || PlayerInfo[playerid][playerteam]==CIV || PlayerInfo[playerid][playerteam]==255) return SendClientError(playerid,"You cant use this Command");
    SendClientMessage(playerid,COLOR_LIGHTYELLOW,"------[MEMBERS ONLINE]------");
    for(new i; i != MAX_PLAYERS; i++)
    {
        if(PlayerInfo[playerid][playerteam] == PlayerInfo[playerid][playerteam])
        {
            faction++;
        }
    }
    format(online, sizeof(online), "%d online members!", faction);
    SendClientMessage(playerid, 0xFFFFFFFF, online);
    return 1;
 }

Put the new faction = 0 and online [128]; and the top of your script.