RetrieveSymbolDefItem Interface need using demo

Yeah, sample code on these classes and stuff would be VERY nice.  I'm not as familiar with the C++ side, but I'll share my code from weblink/js.  I tried to just include the relevant bits, so apologies if I'm missing anything.

 var session = pfcGetProESession ();
 var drawing = session.CurrentModel;

 var dwgView = seledge.SelView2D;

 var stop = false;
 var point;
 while (!stop)
 {
 var mouse = session.UIGetNextMousePick (pfcCreate ("pfcMouseButton").MouseButton_nil);
 
 if (mouse.SelectedButton == pfcCreate ("pfcMouseButton").MOUSE_BTN_LEFT)
 {
 point = mouse.Position;
 stop = true;
 }
 else
 stop = true;
 }

 var position = pfcCreate ("pfcFreeAttachment").Create (point);
 position.View = dwgView;

var symDef = drawing.RetrieveSymbolDefinition ("flagnote_hex", null, null, true);

var Hexinstrs = pfcCreate ("pfcDetailSymbolInstInstructions").Create (symDef); 
Hexinstrs.ScaledHeight = 8.25;
Hexinstrs.SetGroups(pfcCreate("pfcDetailSymbolGroupOption").DETAIL_SYMBOL_GROUP_ALL , null);
var notenum = flagnote
var varText = pfcCreate ("pfcDetailVariantText").Create("NUM" , notenum);
var varTexts = pfcCreate("pfcDetailVariantTexts");
varTexts.Append(varText);
Hexinstrs.TextValues = varTexts;

var Hexposition = pfcCreate ("pfcFreeAttachment").Create (point);
var HexallAttachments = pfcCreate ("pfcDetailLeaders").Create ();	
HexallAttachments.ItemAttachment = Hexposition;

Hexinstrs.InstAttachment = HexallAttachments;

var symInst = drawing.CreateDetailItem (Hexinstrs);
symInst.Show();