If you go to learn, openings, choose an opening, then practice against the computer.
Playing a specific opening/variation vs Chess.com bot - please advise

That's the thing - I want to practive the Vienna Gambit but the computer can play something else, you see my point?
My question was if it's possible to set the variation up into the computer so that it doesn't give me Sicilian or Petrov but the one I want to practice.
Cheers.
Hi there Chess.com folks,
Please advise.
I would like to practice some particular openings and variations playing against a bot on the website - does such an option exist?
If not, do you know any other sites or tools one could use for such a training?
Thanks,
Tom