How to retrieve values from a DME Call

How to retrieve values from a DME Call

In the following Javascript function I am writing the DME Call selects 2 fields from the HRHISTORY table. I need some assistance with what programming is needed to retrieve, reference the return records/field values from the DME query.

Also should the DME call output be in CVS or XML format?

function myDMECall()
{
     var vCompany = lawForm.getDataValue("text1");
     var vEmployee = lawForm.getDataValue("text2");
     var vAdjHireDate = lawForm.getDataValue("text14");
     alert(vCompany + ", " + vEmployee + ", " +vAdjHireDate);
 
      // DME Call
      var s = portalWnd.DMEPath;
      s += "?PROD="+strPDL;
      s += "&FILE=HRHISTORY";
      s += "&FIELD=BEG%2DDATE;A%2DVALUE";
      s += "&SELECT=COMPANY=" + vCompany + "%26EMPLOYEE=" + vEmployee + "%26FLD%2DNBR=20" + "%26BEG%2DDATE%3E%3D" + vAdjHireDate;
      s += "&OUT=CSV&DELIM=~&NOHEADER&MAX=2";
      alert(s);
 
      var sReturn=portalWnd.httpRequest(s);

      ....
}