TTL (Time To Live) for for credits

Gentlemen professionals, there is one offer for you! In addition to the columns “User”, “Transaction datetime”, and “Amount” add the validity period of the packages to the “Manage credit” item. It seems to me that this is a good idea, because it happens that you have to give several SMS messages with a certain period of TIME to someone in a short period of time, or assign a certain number of SMS FOR each week and there can be a lot of such options. It would be good if later versions have this option. Thanks in advance.

No one even responded to this. Actually, it was a kind of poll! At least the feature that I think will be very useful. Who uses PlaySMS and provides services monthly

Please, also take note. Very useful will be a feature. Thanks in advance.