firefox profiles & proxy

[Borque]

I recently updated firefox and i created several profiles. And i was going to install different proxy for each one of them.
This part was easy but once i check my ip from "whatismyip.com" i see all profiles have the same ip which is my main ip.
How can i install proxy to firefox?
Shall i use older version of firefox as i hear new version doN't let you use multiple proxy .

thanks

ps. i am sure the proxies work as i tested them on scrapebox

 

[BuyPersonalProxy]

I recently updated firefox and i created several profiles. And i was going to install different proxy for each one of them.
This part was easy but once i check my ip from "whatismyip.com" i see all profiles have the same ip which is my main ip.
How can i install proxy to firefox?
Shall i use older version of firefox as i hear new version doN't let you use multiple proxy .

thanks

ps. i am sure the proxies work as i tested them on scrapebox

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https://www.buypersonalproxy.com/user/faq