Following the instruction on the Job Parameter Dynamic values, I am able to use
{{job.id}}
{{job.name}}
{{job.run_id}}
{{job.repair_count}}
{{job.start_time.[argument]}}
However, when I set trigger_type as trigger_type: {{job.trigger.type}} and hit SAVE, it errors out as below image.
also, I noticed that the Dynamic values window from the Job parameter Edit Parameters page vs. the official doc has discrepancy - {{job.parameters.[name]}} is missing from the Job parameter Edit Parameters page.