no security event logs for brute force attacks

Hi, I am testing brute force attacks on asm. I set alarm and captcha, and it shows the captcha when reaches trigger. But even if captcha shows, I cannot find event logs of brute force attacks in security event logs .

 

My version is 13.1.1 0.0.4 Final.

 

And, I still tested, in Source-based Brute Force Protection, if I set to "Alarm and CAPTCHA" , neither "Security - Event Logs : Application : Requests" nor "Security - Event Logs : Application : Brute Force Attacks" has log.

 

And if set to "Alarm and Blocking Page", "Security - Event Logs : Application : Requests" will have blocking log, but "Security - Event Logs : Application : Brute Force Attacks" still not.

 

So, I wanna know where I can see the log for appearing CAPTCHA page? And I also notice when appearing CAPTCHA, it will appear a Support ID on the page. But the digits length of this Support ID is different from the Support ID in "Application : Requests" and I don't know how to use it (since no log, I cannot get result searching this Support ID in logs) . So my another question is where can I use Support ID on CAPTCHA page to track the event?

 

Thanks!

 

Log profile for reference: