How to set for the exact project the rate limit?

Hi!
I would like to set rate limit for the exact project how to do it?
the next steps are not work.

irb(main):010:0> Plan.default.actual_limits.web_hook_calls
=> 0
irb(main):008:0> p = Project.find_by_full_path('alert-jobs')
=> #<Project id:5056 alert-jobs>>
irb(main):007:0> p.actual_limits.update!(web_hook_calls: 30)
=> true
irb(main):010:0> Plan.default.actual_limits.web_hook_calls
=> 30
irb(main):011:0> p.actual_limits.update!(web_hook_calls: 0)
=> true

Thanks,
Gonchik Tsymzhitov