How to add an auto incremented number instead of random characters in a saved screen capture file name?

[JasonCarlos]

Hi!

I've been trying out the screen capture functionality of BetterTouchTool and I'm wondering how I could add an auto incrementing number to the end of the file name instead of random characters (as is set by default).

This is the current default setting : > Screenshot_{datetime}_{random}

Thanks for any suggestions!