It is implemented in an indicator named "N bars exit".
The problem is that we do not know when the "N bars" happen. The implementation in FSB Pro is a little bit hacky.
It can be done of course. I'll have it in mind.
...
Funny fact.
I made a screenshot for the N Bars exit indicator and save it locally as "n-bars-exit.png". Then I decided that if someday I made such an indicator for EA Studio I have to name the screenshot with some other name. So I renamed the current one to "fsb-pro-n-bars-exit.png". After that I tried to upload it in I'm my image holding service, but surprisingly, it warned me that such a file already exists. I was curious what the file was and check it. Here is what appeared.
The screenshot I made and named now:
The screenshot I was made, named and forgotten years ago:
Consistency, consistency...
Then tell me for the free will 
)