Thank you for your reply. This could work BUT it will be very very difficult in my case because for example the first dropdown is (nationality) and if he/she click on British for example it will show option 1 and option 2 in the second dropdown and if any other nationality is selected it will show only one option so you can imagine how much time it will take to create entries in the backend form and then use the plugin to create the dynamic login in the front end form. (we have lets say 70 nationalities).
After all i guess i will give it a try because there is no other option. Thank you once more.