login in a hosted account

I'm trying to login my users automatically from my website to adobe connect.

The goal is to automatically register my users in adobe connect as soon as they register in my system ( I don't have problems with this part ) and to have a link inside my system that loads adobe connect inside an iframe.

My problem lies in making a call like the one described in the webservices

example.com/api/xml?action=login&login=joy@acme.com&password=happy&account-id=295153&session=Sbreezzd2dfr2ua5gscogv

(in my case the example.com is something like meetxxxx.adobeconnect.com )

This doesn't work because I'm in a different domain and I can't set a cookie this way.

How can I login my users in adobeconnect without them being prompted with the loginscreen?

Or is it possible to open the meeting with the session value? I have tried something like   meetxxxx.adobeconnect.com/myMeeting&session=Sbreezzd2dfr2ua5gscogv but this is not recognized.

thank you