APEX

Hi Folks,
The google recaptcha plug-in looks interesting, hence I thought I would add in on to a Registration page
that I am building for a small experimental application.

(read more about the plugin via page http://www.oracle.com/technetwork/developer-tools/apex/application-express/apex-plug-ins-182042.html )

The details there might be adequate for experienced developers, but I'm having "picnic" problems with this
plugin ("picnic" == "Problem In Chair, Not In Computer" :-)

Okays, so I download the plugin and integrate it into the application (Apex v4.? before I get crucified).
I also gets the Public and Private keys from Google too, and set these parameters into Apex.

So, time to actually use this plugin on the page: I create an item of this recaptcha type and run the page. Voila, the
item appears. I can type words into the rectangle box that appears, and everything looks fine and dandy.

Hmmm... how do I go about detecting whether what the end user types squares with the squidgy words shown in
the box? Answer: some sort of Validation.
But how to tickle the plugin to ask it how it is doing?

I guess I need to call some PL/SQL function available from the plugin, but it's not clear what to actually call.
I did venture in to the plugin's PL/SQL code and had a look at:

function validate_recaptcha (
p_item in apex_plugin.t_page_item,
p_plugin in apex_plugin.t_plugin,
p_value in varchar2 )
return apex_plugin.t_page_item_validation_result

but I didn't find any hints as to what these four parameters are. Never mind the parameter names, some of those
parameter types doesn't make for "obvious" reading.

So the question is, having a lovely recaptcha on the screen makes the page look nice, but what additional
steps does a person need to take in order to interrogate the widget as to whether its input is valid?

Thanks in advance

Mungo

P.S. Patrick Wolf's page at http://www.inside-oracle-apex.com/adding-captcha-to-your-oracle-apex-application/ has
helped me initially but I wonder if the "future" bit at the top (dated November 2011 :-) is meant to be an "or"
when compared to the subsequent paragraphs. As in "look at the Google version OR follow these instructions".