//Get PortComm number that already set from .txt file on local drive.
private str getPortComm()
{
    #file
    str getCOMport;
    boolean cekPortExist;
    AsciiIo file;
    Container data;
    int i;
    System.IO.FileInfo fileInfo;
    ;

    new InteropPermission(InteropKind::ClrInterop).assert();
    fileInfo = new System.IO.FileInfo(@”C:\portcomm.txt”);
    if(fileInfo.get_Exists())
    {
        file = new AsciiIo(@”C:\portcomm.txt”,#io_read);
        file.inFieldDelimiter(‘\t’);
        file.inRecordDelimiter(‘\n’);

        if(file)
        {
            while(file.status() == IO_Status::Ok)
            {  
                data = file.read();
                for(i = 1; i <= conlen(data); i++)
                {
                    getCOMport = any2str(conpeek(data, i));
                }
            }
        }

    }

    return strLTrim(getCOMport);
}

————————————

//Get Weight from PortComm
private real AI_getWeight()
{
    System.String netstring;
    System.String sample;

    int WeightInReal;
    int tryCount;
    str value;
    str value2;
    str portComm;
    System.IO.Ports.SerialPort port3;
    real weightFinal;

    tryCount = 0;

    portComm = this.getPortComm();
    if(portComm)
    {
        port3 = new System.IO.Ports.SerialPort();
        value = “0”;
        port3.set_PortName(portComm);
        port3.set_BaudRate(9600);
        port3.set_Parity(System.IO.Ports.Parity::None);
        port3.set_DataBits(8);
        port3.set_StopBits(System.IO.Ports.StopBits::One);
        port3.set_Handshake(System.IO.Ports.Handshake::None);

        try
        {
            port3.Open();
            while(tryCount<1)
            {
                WeightInReal = sleep(500);
                netstring = port3.ReadExisting();
                value = netstring;
                value2 = value;
                tryCount++;
            }
            port3.Close();
            port3.Dispose();
        }
        catch(Exception::CLRError)
        {
            info(“Wrong Port Comm Number”);
        }

        value2 = strReplace(value,”=”,””);
        value2 = strReplace(value2,”-“,””);
        value2 = strLTrim(value2);
        value2 = subStr(value2,1,6);
        weightFinal = str2num(value2);
    }
    else
    {
        info(“Check file portcomm.txt at C:\””);
    }

    if(!weightFinal)
    {
        info(“Please check your device, clarify it already turned on”);
    }
    return weightFinal;
}

—————————

on method button clicked, override.. some example here for you

void clicked()
{
    real _value;
    InventTable inventTableLoc;
    super();
    _value = this.AI_getWeight();
    
    Select * from inventTableLoc where inventTableLoc.ItemId == ProdJournalProd.ItemId;
    if(_value)
    {
        if(inventTableLoc.AISatuanPrimer!=”Kg”)
        {
            ProdJournalProd.AISatuanTertier = _value;
            ProdJournalProd_AISatuanTertier.enabled(False);
        }
        else
        {
            ProdJournalProd.AISatuanTertier =_value;
            ProdJournalProd_AISatuanTertier.enabled(True);
        }
    }
    ProdJournalProd_ds.executeQuery();
}