Maximum subscription lenght on pay per view

Hiya. I have been reading the community board regarding the subscription option on the pay per view plugin, and it seems the maximum subscription length on this plugin is 90 days (subscriptions longer than this run into problems on paypal apparently--though it's not exactly clear to me what these problems are). Can you clarify this issue? I would like to set up a year-long subscription option on my site, and was planning to just put '365' in the days field of the subscription section in my specs, but if this isn't going to work I need to know. Thanks for your time.