hand over a placeholder (i.e. id, ...) to the next page

hi folks,

to do an iCal-feature to offer event data for a personal calendar (thunderbird calendar, ...) using this idea which I had also
http://modxcms.com/forums/index.php?topic=29970.0

So I want to offer a (download) link for this data for each event. The problem is for me to hand over the page id of the "event page" (witch has a link to the page witch delivers the data in iCal format (iCal.html).

i. e.
it is easy to add the "event page" id to the link to iCal.html like ".../iCal.html#175". But till now and long searches on modx I did not manage to pull the value "175" in this example out of the url to use it in a ditto call.

I think there is surely a solution, I do not see yet ... (for this is one more case I crash into this problem)
any help is appreciated

You could try the Ditto Request Extender assets/snippets/ditto/extenders/request.extender.inc.php ( I haven’t used it yet )
Or add &pageid=175 to your link url and have a little snippet retrieve the pageid value on your landing page :

I think you could also use a snippet to set a $SESSION variable with the page id and then another snippet to read and return it.

I love MODx and its community
the little snippet from bunk58 did it. Great and thanks very much also to BobRay.
I try to avoid cookies so I prefer the the REQUEST version.

Ok, the next problem ... http://modxcms.com/forums/index.php/topic,35644.msg215460.html#msg215460