Selecting & Ordering form fields in a QR object

Tks for the reply Geoge. This is how I modified the script.  Sorry but I am not an expert by any means and java is a foreign language to me although it has similarities to some others.

The sequence I want the fields in are StudentID, FirstName, LastName as in the modified script below. However I suspect that there is a sort statement somewhere that is creating the barcode in alpha sequence and I have no idea which statement it is. This script is the one that appears when I change the value to custom script onproperties.

/* Customize: */

function bMemberOf(strName, aStrNames)

{

    for (var nMembIdx in aStrNames)

    {

        if (strName == aStrNames[nMembIdx])

            return true;

    }

    return false;

}

function strTabDelimited(oParam)

{

    var bNeedTab = false;

    var strNames = "";

    var strValues = "";

    for (var i = 0; i < oParam.oDoc.numFields; ++i)

    {

        var strFieldName = oParam.oDoc.getNthFieldName(i);

        if ((null == oParam.aFields || bMemberOf(strFieldName, oParam.aFields))

            && (null == oParam.strXclField || strFieldName != oParam.strXclField)

            && (oParam.oDoc.getField(strFieldName).type != "button"))

        {

            if (bNeedTab)

            {

                if (oParam.bFieldNames)

                    strNames += "\t";

                strValues += "\t";

            }

            if (oParam.bFieldNames)

                strNames += strFieldName;

            strValues += oParam.oDoc.getField(strFieldName).value;

            bNeedTab = true;

        }

    }

    if (oParam.bFieldNames)

        return strNames + "\n" + strValues;

    else

        return strValues;

}

try

{

    if ( app.viewerVersion >= ADBE.PMD_Need_Version )

        event.value = strTabDelimited({oDoc: this, aFields: ["StudentID", "FirstName", "LastName"], bFieldNames: false});

    else event.value = " ";

}

catch (e)

{

    event.value = " ";