How can I increase the max number of pictures taken before WebCam Monitor restarts numbering?

There appears to be a maximum of 60 pictures, this is not enough for my purposes.

I created a website to show pictures of sky pointing south but as I only can have 60 pictures per scheduled day I can take it only at each 15 minutes to cover 06:00 to 21:00 interval

Is it possible to increase this number?