Ok, having another look, I’m thinking it might not actually be possible?
Am I right in thinking that the timestamp field isn’t actually used for calculating the next bill date and that is handled by paypal?
So if someone joined up June 1st for example, using the above it would do £30 for the first time then £40/yr but it would always bill on the 1st of June and there’s no way to change that?
That’s a pain if that’s the case =/