AWS WAF Rule F5-OWASP_Managed custom response

Hi!

We are using AWS WAF managed rule 'F5-OWASP_Managed'. I would like to create a WAF custom response when requests are blocked by this rule. To do so I need to change the rule from block to count, and capture labels assigned by this rule in a WAF custom rule.

When looking into the AWS WAF console I cannot see any labels assigned to this WAF rule? Can somebody please tell me if this rule assigns labels, and, which one?

Thanks