[cloud9]

pawn Code:

// TOp of the script
new bool:gArena[MAX_PLAYERS];

if (strcmp(cmdtext,"/x1", true)==0)
    {
    if(GetPlayerMoney(playerid) < 200) return SendClientMessage(playerid, COLOR_RED, "You need $ 200 to use the teleportation!");
    SetPlayerInterior(playerid,0);  
    SetPlayerPos(playerid,1890.046,-1316.395,49.069);
    new pname[MAX_PLAYER_NAME];
    GetPlayerName(playerid, pname, MAX_PLAYER_NAME);
    format(string, sizeof(string), "*** %s was to o x1 (/x1)", pname);
    gArena[playerid] == true;
    SendClientMessageToAll(COLOR_YELLOW, string);
    GivePlayerWeapon(playerid,4,0);
    GivePlayerWeapon(playerid,26,1000);
    GivePlayerWeapon(playerid,31,1000);
    GivePlayerWeapon(playerid,24,1000);
    GivePlayerWeapon(playerid,32,1000);
    return 1;
    }

    if(strcmp(cmd, "/transfer", true) == 0) {
      new tmp[256];
        tmp = strtok(cmdtext, idx);

        if(!strlen(tmp)) {
            SendClientMessage(playerid, COLOR_WHITE, "TYPE: /transfer [id] [amount]");
            return 1;
        }
        giveplayerid = strval(tmp);
        if(gArena[giveplayerid] == true){
           SendClientMessage(playerid, COLOR_WHITE, "He is in Arena you can't send him money");
           return 1;
         }
        tmp = strtok(cmdtext, idx);
        if(!strlen(tmp)) {
            SendClientMessage(playerid, COLOR_WHITE, "TYPE: /transfer [id] [amount]");
            return 1;
        }
        moneys = strval(tmp);

Remember to set gArena[playerid] == false; when he leaves the arena and OnPlayerConnect.