I am creating automation that is to be triggered by a field value change and the field I want monitor for changes is not listed in the drop-down. So, I am trying to use the smart value for the field (e.g. {{issue.Affected part number}} but I am getting a "Value must contain a valid regular expression." error when I try to publish the automation. Could the issue be because the data in the field is an Asset? If so, is there a workaround?