[KoczkaHUN]

That code is a bit messed up, I tried to clean it up, check if it works:

pawn Code:

CMD:deposit(playerid,params[])
{
    new string[92];
    new type;
    if(sscanf(params, "d", type)) return SendClientMessage(playerid, -1, "[USAGE]: /deposit [amount]");
    if(type <= 0) return SendClientMessage(playerid, -1, "ERROR: Amount must be greater than zero.");
    if(GetPlayerMoney(playerid) >= type)
    {
        GivePlayerMoney(playerid, -type);
        BankInfo[playerid][pBankAccount] += type;
        format(string, sizeof(string), "INFO: You have successfully deposited $%d to your bank account.", type);
        SendClientMessage(playerid, 0xFFFFFFFF, string);
    }
    else SendClientMessage(playerid, 0xFFFFFFFF, "SERVER: You do not have that much amount in your hand");

    return 1;
}

CMD:withdraw(playerid,params[])
{
    new string[92];
    new type;
    if(sscanf(params, "d", type)) return SendClientMessage(playerid, -1, "[USAGE]: /withdraw [amount]");
    if(type <= 0) return SendClientMessage(playerid, -1, "ERROR: Amount must be greater than zero.");
    if(BankInfo[playerid][pBankAccount] >= type)
    {
        BankInfo[playerid][pBankAccount] -= type;
        GivePlayerMoney(playerid, type);
        format(string, sizeof(string), "INFO: You have successfully withdrawn $%d from your bank account.", type);
        SendClientMessage(playerid, 0xFFFFFFFF, string);
    }
    else SendClientMessage(playerid, 0xFFFFFFFF, "SERVER: You do not have that much amount in your account");
    
    return 1;
}