Script working, but Password Spray event not being generated in O365

[adminvb29]

I created 1000 users "all test users" in my tenant, added all those users to the users.txt file so it cycles through valid accounts with a bad password, but Password Spray events never show up in Azure. Maybe I dont know enough of the actual algorithm, but for whatever the reason may be, I cannot get it to generate the alert. Has anyone had luck with generating the actual password spray alert in azure id protection?