how an error-code vb member (serverside) jscript

i have an plain-old asp web site creates slight dll combined vb 6. slight sets an blunder formula vb error vigilant something goes wrong. i wish opening blunder formula outline set error vigilant javascript (where i dll method). first: possible? second: possible, i that? interjection advance!

my initial thought was:

function myfunc()
{
  var obj = server.createobject(mydll.myclass);

  try
  {
    obj.mymethod();
  }
  catch(error)
  {
    // here i wish blunder formula outline vb error object
  }
}

however, i try this, blunder i wrong. (i attempted test-app receives same error.) i an error-code isn't same javascript vb.

anyone know aught done?

/l