else if (MSG.toUpperCase().indexOf("!SELLCHECK") >= 0 && (CONFIG.CARDS.PEOPLETHATCANSELL.indexOf(SENDER.getSteamID64().toString()) >= 0 || CONFIG.CARDS.PEOPLETHATCANSELL.indexOf(parseInt(SENDER.getSteamID64())) >= 0)) {
        let n = parseInt(MSG.toUpperCase().replace("!SELLCHECK ", ""));
        client.chatMessage(SENDER, "Loading inventory...");