I want to test a simple dummy with users, to see if they know how to navigate my site and if they finde what they are looking for. For the test, I need to identify users, based on an ID. The ID is handed over by a third party like this: https://surveylink.com/survey/1188927/6r93si/!pi**[state]** state is the ID.
After completing the prototype I have to send the user back to the third party agency including his ID so he can be identified and paid for participating in the test. The like should look like this https://thirdpartyagency.com/survey/selfserve/1819/g0d9/190925/?state=XXXX&var=1. XXXX is the ID I have to pass over.
So my question is. How can I fetch that ID stick it to the user during the test in the prototype and then pass it on to the third party agency for verification?
I was thinking of using global variables but I am stuck with my knowledge and need help on how to do it.