Thank you, but still this is completely different from what I am asking. Please read it carefully:
After every purchase I need to open a third party url address with variables from my store purchase. That URL is created from third party domain (where I send the notification, that I have finished a checkout with customer) and variables from purchase (email, item, order - so that third party can send a questionaire to that particular client).
All you described above is something different.
I think I only need some code snippet how to fire that third party URL, I think I am able to create that URL with my variables from order.
Thank you once again for your time and replies.
M