Tool is not working with proxy command

[AMIT-XXX]

i used below commands but tool isn't working with proxy

1. python3 pwnxss.py --proxy {'127.0.0.1:8080'}
2. python3 pwnxss.py --proxy {'https':'127.0.0.1:8080'}
3. python3 pwnxss.py --proxy {'http':'http://127.0.0.1:8080'}
4. python3 pwnxss.py --proxy {'https':'https://127.0.0.1:8080'}
5. python3 pwnxss.py --proxy {'https':'127.0.0.1:8081'}
6. python3 pwnxss.py --proxy {'https':'localhost:8080'}
7. python3 pwnxss.py --proxy 'https':'127.0.0.1:8080'
8. python3 pwnxss.py --proxy 'https':'https://127.0.0.1:8081'

Let me know , what am doing wrong