How to Create a LiveTrace Options Script

Question

Hello everyone!
I am using Illustrator CS3 on WinXP Pro.
Let me begin by saying that this is my first attempt at scripting anything and any help would be truly appreciated. I have written a script:
var myDocument = app.activeDocument;
var mySelection = myDocument.rasterItems[0];
mySelection.selected = true;
app.selection[0].trace();
app.selection[0].cornerAngle = 180;
app.selection[0].fills = true;
app.selection[0].ignoreWhite = true;
app.selection[0].minArea = 0;
app.selection[0].pathFitting = 0;
app.selection[0].threshold = 256;
app.selection[0].tracingModeType = 'TRACINGMODEBLACKANDWHITE';
app.redraw();
This script is tracing the raster image (barcode). However, it doesn't appear that it is using any of the tracing options.
Does anyone know how to properly script this in order to utilize the tracing options and then expand at the end?
Any help would be truly appreciated.
Many Thanks!

Answer 1

I didn't hack this out, so I may be off - but from what i gathered from the JS guide :
the trace() method returns an object.
-- From the Guide --
A tracing object, which associates source raster art item with a vector-art plugin group created by tracing.
Scripts can initiate tracing using PlacedItem.trace or RasterItem.trace. The resulting PluginItem object represents the vector art group, and has this object in its tracing property.
ie:
myTrace = app.selection[0].trace();
myTrace.cornerAngle = 180;
myTrace.fills = true;
app.redraw();
myTrace.expandTracing();