Help prepopulate data to another form.

I have three forms I want to pass a name through.
Typically I use url parameters but that is when the user is expected to complete each of the forms.
Now I am using the scheduler
1: https://hipaa.jotform.com/211731225590045
If someone chooses " new complaint" I have the thank you page redirect them to
2: https://hipaa.jotform.com/mybackcracker/new-complaint
If they did not get in a car accident or work injury, the thank you page redirects them to
3: https://hipaa.jotform.com/mybackcracker/new-complaint-intake
I want their name from form 1 to be passed to #2 and then #3 if applicable. I filled in the prepop ap for #2 to get the name from #1 but it doesnt work... what am I doing wrong?

Put this into your first form conditional thank you URL https://www.jotform.com/form/211868820611051&name[first]={name:first}&name[last]={name:last}.

Then this URL https://www.jotform.com/form/211868669064165&name[first]={name:first}&name[last]={name:last} on your second form's conditional thank you URL.

Please try that and let us know how it goes.