Hello,
I'm new in this community and I just installed OpenCTI few days ago, but I have a couple of questions about indicators.

After reading some articles (about stix and opencti) and did some tests on opencti demo, I'm still wondering how to have all observables that have a common charateristic wrote in indicator stix pattern.
For example, if I have an indicator like this: [email-message:subject = 'Hello'], can I get all the observables (type email messages) that contain the word "Hello"? If yes how?

Thanks for your help, I know that is a basic question but I really want to start with this tool.

Best regards,