Setting properties on a V8Function

[kynx]

My first real problem! I'm trying to do something similar to the following javascript in V8Js:

var f = function() { return "foo"; }
f.bar = "baz";
console.log(f.bar);
// baz

So I've got the following:

$v8 = new V8Js();
$f = $v8->executeString('(function() { return "foo"; })');
$f->bar = "baz"; // doesn't complain, but...
$v8->f = $f;
$v8->executeString('print(PHP.f.bar)');
// undefined

Well OK, it's a kind of crazy thing to want to do. But I've got PHP helpers being called from handlebars.js. They're passed JS functions, modify and then return them to the JS, which is expecting properties to be set. Any way around this?