Limit the number of version saved

Good morning,

I am using Kiwi CatTools to save the Cisco switches config.

I am now facing the situation where I have so many versions of the same config and it quickly starts to take some space.

Do one of you know who I can limit the amount of configs backup before a rollover.

Let says I would like to have 4 versions backup and then overwrite.

Thanks for your help.