Exit status of built-in command dialog

Is there any way to get the exit status of a dialog tied to a built-in command? Take the script below...

// do some stuff
app.executeMenuCommand("Path Blend Options");
// do some more stuff

If the user cancels the built-in dialog that pops up for "Blend Options" I don't want to continue with "do some more stuff". I have looked through tons of ExtendScript Debugger variables and the docs, and I can't seem to figure it out.

Thanks in advance for your help!