how to use custom list trigger in a playbook

[dhirajtec]

Hey Community Members,

Can anyone guide me how to use custom list trigger in the playbook. I tried creating a playbook with trigger as a custom list but it seems it is not working as I anticipated. Below are the sequence of steps I performed:

1. Created a custom list with below details, using navigation Settings-> Environment->Custom Lists

Identifier	Category	Environment
Brute Force Attack	UseCase	LG
Access Failed Login	UseCase	LG
Remote login failure	UseCase	LG

2. Created a playbook with using navigation: Response->Playbook

From Trigger Section I selected "Custom List" . In Paramerters I selected contails () and in Choose Parameter I tried with multiple combinations: At first I provided "UseCase", then tried with "Category=Usecase", then with Categories=UseCase. But none worked for me. 

The requirement here is playbook should get trigger if it finds any of the three Usecases mentioned in "Identifier" section of custom list.

Would really appreciate any help here.