Can't create a Vendor Comment using the writeattach API from AP10.1.

I am attempting to programmatically create a vendor comment in the FORM_OnAfterTransaction(data) event of AP10.1.  On pages 105-106 of the Lawson Design Studio User Guide version 10 (LDSUG_10.0.9.0_UWA.pdf) there is an example for exactly what I want to do.  The problem is that it's not a working example.  It looks like it's creating an Invoice comment, not a Vendor comment because it references Invoice data fields that aren't available to AP10.  Here is their example:

function FORM_OnAfterTransaction(data) {  // was transaction successful?  if (formState.agsError) return;

 // grab the value for the select box  var vList = lawForm.getFormValue("select12");  if (vList != "None")  addComment(vList); }

function addComment(vList) {

//Case for the four options  var vAudt  switch (vList)  {  case "All":  vAudt="A";  break;  case "Report":  vAudt="D";  break;  case "Note":  vAudt="N";  break;  case "Check":  vAudt="C";  break;  }  // set variables from the form to use in API  var vComm=lawForm.getFormValue("textarea1");  vCompany = lawForm.getDataValue("API-COMPANY");  vVendor = lawForm.getDataValue("API-VENDOR");  var vInvoice=lawForm.getFormValue("text12");  vTitle = portalWnd.oUserProfile.getAttribute("lawsonusername");

 // build the API call for the writeattach cgi  s = portalWnd.WRITEATTACHPath + "?_OUT=XML&_PDL=" + strPDL;  s += "&_FN=APINVOICE&_IN=APISET1&K1=" + vCompany;  s += "&K2=" + vVendor;  s += "&K3=" + vInvoice;  s += "&K4=000&K5=0000&_ATYP=C&_AUDT=" + vAudt;  s += "&_USCH=none&_DATA=TRUE&_OPM=M&_ECODE=FALSE&_ANAM=" + vTitle;  s += "&_ATXT=" + vComm;

 // send API to the server  portalWnd.httpRequest(s);

 // Reset the Textarea and set the select to None  var space="";  lawForm.setFormValue("textarea1","");  lawForm.setFormValue("select12","None"); }

You can see it gets data from API-COMPANY and API-VENDOR which are not AP10 data fields.  Here is what I am doing (have some debugging code in there for now):

Here is my call to the addVendorComment function below:

addVendorComment(vendorCompany,sVendorfld,"","D","OFAC","OFAC CHECK COMPLETED PAYEE INFO NOT A MATCH TO WLE.");

function addVendorComment(vendorCompany,vendor,locationCode,commentType,commentTitle,comment){

 /* This function will add a vendor comment. */

 /* build the API call for the writeattach cgi */  s = portalWnd.WRITEATTACHPath + "?_OUT=XML&_PDL=" + strPDL;  s += "&_FN=APCOMMENTS&_IN=APCSET1";  s += "&K1=V";  s += "&K2=" + vendorCompany;  s += "&K3=" + vendor;  s += "&K4=" + locationCode;  s += "&K5=0000&_ATYP=C&_AUDT=" + commentType;  s += "&_USCH=none&_DATA=TRUE&_OPM=M&_ECODE=TRUE";  s += "&_ANAM=" + commentTitle;  s += "&_ATXT=" + comment;

 alert("s=" + s);  // For debugging    /* send API to the server */  var addCmnt = portalWnd.httpRequest(s);  alert("HTTP Request complete");  // For debugging

 if (!addCmnt || addCmnt.status)  {     // error retrieving file: display message     var msg="Error adding " + commentTitle + " comment.";     if (addCmnt)        msg+=("\n"+portalWnd.getHttpStatusMsg(addCmnt.status));     portalWnd.cmnDlg.messageBox(msg,"ok","stop",window);     return;  }

 alert("Checking error message"); // For debugging  var addCmntErrMsg = addCmnt.selectSingleNode("//ErrMsg").text;  alert("Error message: " + addCmntErrMsg); // For debugging

}

The last "alert" displays "Error message: Invalid value for User Defined Type: _AUDT=(D)."

I opened an incident with Lawson support and pointed out the example in their documentation doesn't work and is incorrect but they told me I would need to contact professional services since it was a customization.  Apparently they don't care that their documentation is wrong.

Has anyone been able to successfully generate a vendor comment programmatically or can you see any obvious errors with my code?

Thanks, Randy