Forum VB 4 Process to add City location for new subscriber

[محروم.كوم]

With so many spammers, I would like to have the new subscriber to make the city location a minatory item they must fill out. I check IP addresses daily and delete certain countries, but now some are coming for the US.

How do I modify the script to make City field a requirement for all new subscribers?

Thank you __DEFINE_LIKE_SHARE__