NPAPI ExternalInterface "issues"

Question

So I'm writing an app which hosts the flash plugin using
NPAPI. Now, I've not got a javascript engine so I need to use
NPN_Invoke and its kins.
Unfortunately when I call out to from flash to the host e.g.
ExternalInterface.call( 'testfunc', 'arg1', 56, { 'some':
66, 'inter':'est' } );
I DON'T get NPN_Invoke called, instead it calls NPN_Evaluate
wrapping the call I'm trying to make in another javascript function
(__flash__toXML) which converts the return return value to XML,
which is frustrating as I don't have a javascript engine.
Now I've noticed that by changing the user agent I return,
flash changes how it queries values e.g. sometimes it invokes
top.location, sometimes it evaluates a javascript function (using
NPN_Evaluate) to retrieve it.
What I want to know is "Can I make Flash call Invoke rather
than Evaluate", Its soooo frustrating as I don't want or need a
javascript engine and there's no reason it shouldn't be able to.
I've found I can avoid the need to handle NPN_Evaluate when calling
into flash by invoking "CallFunction" and serializing the
parameters into xml, so I'll be amazed if I can't get calling out
to work without NPN_Evaluate.
Please help
Rich

Answer 1

bump!
Anyone? is there anyway to get flash to call invoke instead
of evaluate with a javascript string?
Help!
Rich