I don't think you can. I believe you can only limit the number of times someone can renew to the same plan, but no feature to limit how many times the plan can be used; believe this feature is planned for a later release though as it'd seam like a pretty cool usecase. I suppose for now you can use CBSubs SQL Actions to accomplish this using the below query.

Please ensure the above is tested thoroughly to provide what you're wanting. Change 50 to whatever value you want to limit it to. What it does is after a user subscribes it counts already existing subscriptions and increments by 1 then compares it to your limit. If it's at limit it sets the new subscriptions parameter to 0, which disables new subscriptions to that plan.

erilam wrote: I think it will also be necessary to be attentive to the renewals because if you set cbsubs to let a time to renewal for your members, the total number of subscription will be less than your limit for a moment.

First idea that pops up here is to use an SQL script to unpublish the plan if it has reached the desired number of subscribers.

It could be a CBSUbs SQL actions script. Kyle would have to elaborate if this is doable.

Just update the already provided SQL in my above reply to exclude renewals. Check for a status of "A" to only count active subscriptions.