Here’s an example of using regular expressions to extract text within automation scripting.

start:
  set:
    mask@text:
      {% set text = "The ticket mask that I am looking for is: KRN-69622-357 something else" %}
      {% set pattern %}/[A-Z]{3}-\d{5}-\d{3}/{% endset %}
      {{text|regexp(pattern)}}
  
  outcome/hasMask:
    if@bool: {{mask}}
    then:
      return:
        output: The ticket mask is #: {{mask}}